-
Prof. Zohreh Davoudi (University of Maryland)27/07/2026, 09:00
-
Prof. Patrick O'Shea (University of Maryland, College Park)27/07/2026, 09:05
-
Andreas Juttner (CERN)27/07/2026, 09:15
The quark-flavour sector remains one of the most promising avenues for uncovering physics beyond the Standard Model, with an experimental programme set to sharpen its precision, and extend the set of measured quantities, well into the 2040s. Matching this requires lattice QCD to tackle existing and new formal challenges, and to work in ever-closer partnership with experiment.
Go to contribution page
I will survey... -
Stefan Sint (Trinity College Dublin)27/07/2026, 10:00
The strong coupling, $\alpha_s(m_Z)$, is a fundamental parameter of the Standard Model and its precise determination is of central importance to particle physics. It is ubiquitous in the description of hadron collider physics: its uncertainty directly affects the control of initial parton states, e.g. in $pp$-collisions at the LHC, and limits precision studies of Higgs boson production and...
Go to contribution page -
Shoji Hashimoto (KEK)27/07/2026, 11:00
A broad class of physical observables can be expressed in terms of smeared spectral functions. Important examples include the hadronic vacuum polarization contribution to the muon g−2, hadronic τ decays, inclusive semileptonic B and D decays, and amplitudes for rare processes such as B→Kl+l−. In recent years, a variety of methods have been proposed to reconstruct or constrain such spectral...
Go to contribution page -
Xin-Yu Tuo (Brookhaven national laboratory)27/07/2026, 11:30
As precision tests of the Standard Model enter the sub-percent era, radiative corrections in hadronic processes become indispensable theoretical inputs for identifying small deviations between theory and experiment that could signal new physics. Theoretical predictions of radiative corrections are highly challenging, as they intertwine long-distance QED effects with nonperturbative QCD and...
Go to contribution page -
Xiao-Yong Jin27/07/2026, 12:00
I will present the evolution of the machines powering the lattice field theory. I will review recent developments in algorithm and software, present performance results from today's systems, and discuss the future of high performance computing and its impact on our field.
Go to contribution page -
Dr Issaku Kanamori (R-CCS, RIKEN)27/07/2026, 14:00
We present a stabilized FP16 mixed-precision solver. Because the dynamic range of FP16 is much smaller than that of FP32, straightforward use of FP16 arithmetic may suffer from underflow and overflow. To address this issue, we introduce a rescaling procedure for the working vectors. The performance of the solver is evaluated on the Supercomputer Fugaku, which provides native FP16 SIMD support,...
Go to contribution page -
Juan Andres Urrea Nino (Trinity College Dublin)27/07/2026, 14:003Hadronic and nuclear spectrum and interactionsContributed talk
Constructing hadron creation operators which properly sample the finite-volume energy spectrum is a fundamental step in lattice QCD spectroscopy and scattering calculations. Operators enabling access to spectrum information from correlation functions at early temporal separations are extremely advantageous, particularly when the signal-to-noise problem is severe. We present improved operator...
Go to contribution page -
227. Parton Distribution Functions of the Nucleon from Twisted Mass Fermions with Physical Pion MassGabriele Pierini (The Cyprus Institute, TU Berlin)27/07/2026, 14:00
We present the unpolarized and helicity Parton Distributions (PDFs) of the nucleon using an ensemble of $N_f$=2+1+1 twisted mass clover-improved fermions with masses tuned to their physical values and lattice spacing of $a=0.080$ fm. We analyze seven momentum boosts up to $P_z=1.69$ GeV. At boost $P_z=1.21$ GeV we analyze three source-sink separations, in order to investigate possible excited...
Go to contribution page -
Shunsuke Yasunaga (Institute of Science Tokyo / RIKEN)27/07/2026, 14:00
Domain-wall fermions provide a lattice formulation that preserves chiral symmetry to a high degree by introducing an additional fifth dimension. In practical simulations, however, the extent of this direction must remain finite, which leads to residual chiral symmetry breaking characterized by the residual mass. Increasing the fifth-dimensional size can reduce this effect, but it also...
Go to contribution page -
Justus Kuhlmann (ETH Zürich)27/07/2026, 14:00
We present an update on the determination of renormalization constants and improvement coefficients for exponential-clover improved Wilson fermions in the coupling regime of interest for the large volume simulations of the OpenLat initiative ($a\approx 0.034-0.12\,{\rm fm}$). Particular focus is put on the renormalization of the non-singlet vector current using a massless renormalization...
Go to contribution page -
Emanuele Mendicelli (University of Liverpool (United Kingdom))27/07/2026, 14:002Quantum computing and quantum informationContributed talk
Quantum simulations provide a promising framework for studying the real-time dynamics of interacting quantum systems beyond the reach of classical computation. In this talk, we present several aspects of quantum simulations for systems of bosons, including a toy model for D-brane scattering. We describe an efficient digitization and discuss how the evolution of the wave function's mean...
Go to contribution page -
Balint Toth (University of Wuppertal)27/07/2026, 14:00
In this talk I will present updated results on the hadronic vacuum polarization contribution to the anomalous magnetic moment of the muon. I will discuss several window observables, the details of the continuum extrapolation and of other sources of systematic uncertainties.
Go to contribution page -
Fangcheng He27/07/2026, 14:002Theoretical developments and applications beyond the Standard ModelContributed talk
In this talk, I will present recent progress in our lattice QCD calculation of the $\theta$-induced neutron electric dipole moment (nEDM) using the background electric field method. The signal for the nEDM can be enhanced by employing the Feynman–Hellmann theorem. I will also compare results obtained with different nucleon interpolating operators and discuss their effectiveness in suppressing...
Go to contribution page -
Nilmani Mathur (Tata Institute of Fundamental Research)27/07/2026, 14:201Hadronic and nuclear spectrum and interactionsContributed talk
We introduce a novel quark smearing method designed to project the quark field onto a low-energy subspace efficiently. This smearing method is employed to compute sparse estimators of multi-hadron correlation functions. While the signal for the ground state is found to be the same as obtained from full correlation functions, the computational cost is drastically reduced. Furthermore, we...
Go to contribution page -
Rajan Gupta27/07/2026, 14:20Theoretical developments and applications beyond the Standard ModelContributed talk
Results on axial vector form factors and contributions of CP violating interactions to neutron electric dipole moment from ongoing calculations by the PNDME and NME collaboration will be presented.
Go to contribution page -
Thamirys de Oliveira (National Yang Ming Chiao Tung University)27/07/2026, 14:20
In this talk we introduce a machine learning approach to tune an effective relativistic heavy quark action for applications in lattice QCD.
Go to contribution page
The effective action is the so-called "RHQ" action, which has three open parameters that require non-perturbative tuning to match physics observables associated with Lorentz symmetry, spin-averaged masses, and hyperfine splittings in charmonium and... -
Vinay Vikramaditya (University of Maryland, College Park)27/07/2026, 14:201Quantum computing and quantum informationContributed talk
Quantum simulation is a promising approach to study out-of-equilibrium dynamics of quantum gauge field theories, particularly in regimes where classical methods become intractable. Mapping bosonic (gauge) degrees of freedom onto qubits requires truncating their infinite dimensional Hilbert space, leading to errors that grow with system energy and simulation time, and resulting in a large qubit...
Go to contribution page -
Prof. Martha Constantinou27/07/2026, 14:20
We present a calculation of the $x$ dependence of quark GPDs for the nucleon using an ensemble of $N_f$=2+1+1 twisted mass clover-improved fermions with masses tuned to their physical values and a lattice spacing of $a=0.080$ fm. We use matrix elements of nonlocal operators at several values of the momentum boost up to 1.69 GeV, enabling the extraction of GPDs in both the large-momentum...
Go to contribution page -
Lukas Holan (Humboldt University of Berlin)27/07/2026, 14:20
Non-perturbative determinations of renormalization and improvement coefficients are an integral part of the continuum limit of lattice calculations. We explore an alternative strategy that uses composite operators at positive flow time as probes together with finite axial Ward identities to resolve the mixing due to the breaking of chiral symmetry generated by Wilson-like fermions. The...
Go to contribution page -
Anthony Grebe (University of Maryland, College Park)27/07/2026, 14:20
Historically, the cost of lattice-QCD calculations was dominated by applications of the Dslash matrix on a single right-hand side, which is constrained by memory-bandwidth limits to run at a small fraction (10-20%) of the available processing power. The advent of multigrid methods and multi-right-hand-side solvers mean that these limits are no longer the binding constraints they once were. ...
Go to contribution page -
Matteo Saccardi (Colorado State University)27/07/2026, 14:20
In this talk we present the ongoing effort of the Fermilab Lattice and MILC Collaboration to compute the smeared $R$-ratio using $N_f=2+1+1$ HISQ gauge-field ensembles. We discuss closure tests for mock data which incorporate taste-breaking and finite-volume effects to mimic real light-quark connected vector isovector correlation functions. This enables a detailed comparison between different...
Go to contribution page -
John Bulava27/07/2026, 14:402Hadronic and nuclear spectrum and interactionsContributed talk
We present a suite of software for every part of the workflow for evaluating correlation functions on an ensemble of gauge configurations: the construction of irreducible hadron operators, the enumeration of Wick contractions, and the resultant tensor contractions. The workflow is illustrated for correlators between one-, two- and three-hadron operators present in the excited nucleon spectrum...
Go to contribution page -
Roberto Dionisio (University of Pisa, INFN sez. di Pisa)27/07/2026, 14:403Theoretical developments and applications beyond the Standard ModelContributed talk
We present a first lattice study of the momentum-dependent real-time topological transition rate in quenched QCD. In full QCD, this quantity plays an important role in determining the hot axion abundance. The rate is obtained by reconstructing the relevant spectral function from Euclidean topological charge density correlators using the Hansen–Lupo–Tantalo (HLT) method. We present results from...
Go to contribution page -
Fernando Pérez Panadero (IFT-UAM/CSIC)27/07/2026, 14:40
We report on the status of an ongoing determination of the light and strange quark masses in QCD with $N_{f}=2+1$ dynamical flavours. Using CLS gauge ensembles, we employ a combination of a unitary non-perturbatively $\mathrm{O}(a)$-improved Wilson setup and a mixed-action approach with Wilson twisted-mass quarks at maximal twist in the valence. Bare quark masses are extracted from the PCAC...
Go to contribution page -
Simon Pfahler (University of Regensburg)27/07/2026, 14:40
Gauge-field generation in lattice QCD is dominated by repeated solves of the Dirac equation. While multigrid preconditioners reduce solve costs significantly, their expensive setup phase limits overall efficiency. We introduce a gauge-equivariant neural network that accelerates this setup by using approximate low modes from previous configurations, exploiting the autocorrelation along the...
Go to contribution page -
Manuel Colaço (Adam Mickiewicz University)27/07/2026, 14:40
This talk presents an extraction of Mellin moments of the proton unpolarized generalized parton distributions (GPDs) at nonzero skewness from lattice QCD. The analysis builds on the recent studies of GPDs at nonzero skewness, which, together with the polynomiality relations and short-distance factorization matching, connect the moments to generalized form factors. The present method uses...
Go to contribution page -
Sarah Fields (Columbia University)27/07/2026, 14:40
The calculation of inclusive observables remains a significant challenge for lattice QCD, where the inverse problem of relating Euclidean-space data to real-time, multi-particle processes is inherently ill-posed. This work further develops a potential first-principles solution to this inverse problem which uses Nevanlinna-Pick interpolation to determine inclusive decay rates from uncertain...
Go to contribution page -
Frank Winter (Jefferson Lab)27/07/2026, 14:40
Maintaining software portability across diverse accelerated hardware architectures remains a critical challenge for the lattice QCD community. The QDP-JIT library addresses this by providing a transparent, drop-in replacement for QDP++, enabling Chroma applications to run with high efficiency on modern GPUs without requiring any modifications to high-level code.
In this work, we present the...
Go to contribution page -
Tommaso Rainaldi (Stony Brook University)27/07/2026, 14:401Quantum computing and quantum informationContributed talk
We present a versatile quantum computing framework designed to simulate real-time dynamics on emerging hybrid hardware platforms that provide simultaneous access to both discrete (qubits) and continuous (qumodes) quantum resources. This framework leverages continuous-variable bosonic modes to represent the infinite-dimensional Hilbert space of gauge fields, integrated with qubits to represent...
Go to contribution page -
Ryan Abbott (Columbia University)27/07/2026, 15:00
The problem of reconstructing spectral densities from noisy Euclidean-time Monte-Carlo data provides a valuable test-bed for investigating real-time and inclusive observables, and sign problems more broadly. In this talk, I will discuss the causal bootstrap, a new method for spectral reconstructions that unifies several approaches, including analyticity-based methods (Nevanlinna-Pick...
Go to contribution page -
Jack Holligan27/07/2026, 15:00
Large-momentum effective theory (LaMET) allows for a direct calculation of $x$-dependent generalized parton distributions (GPDs) with skewness value $\xi$ on the Euclidean lattice. Large logarithms become present in the lightcone matching process as the momentum fraction of the studied parton approaches 1. We demonstrate a method of resummation for such logarithms as well as provisional...
Go to contribution page -
Takuya Okuda (University of Tokyo)27/07/2026, 15:00Quantum computing and quantum informationContributed talk
Real time dynamics of lattice gauge theories are difficult to access with Euclidean Monte Carlo methods and challenging to implement on quantum devices, where noise can drive states out of the gauge invariant sector. I will present an experimental realization of measurement based quantum simulation (MBQS) for a $(2+1)$ dimensional $\mathbb{Z}_2$ lattice gauge theory on Quantinuum's H2 trapped...
Go to contribution page -
Luchang Jin (Univeristy of Connecticut)27/07/2026, 15:004Hadronic and nuclear spectrum and interactionsContributed talk
We present a noise reduction technique for disconnected diagrams in lattice QCD correlation functions, using the $\eta$ meson as an illustrative example. The method constructs a noise-reduced interpolating operator by subtracting a truncated-gauge-configuration estimate of the disconnected contribution. The truncated configuration restricts the gauge field to a finite time-slice window around...
Go to contribution page -
Leon Hostetler (Indiana University)27/07/2026, 15:00
We introduce PerfAdvisor, a lightweight Python package that uses an LLM-driven agent loop to diagnose GPU performance bottlenecks from supercomputer profiles. Modern HPC profiles contain millions of events across kernels, MPI calls, memory transfers, and idle gaps, making manual diagnosis slow and expert-intensive. PerfAdvisor automates this process by producing ranked, evidence-grounded...
Go to contribution page -
Erik Bäske (Humboldt-Universität zu Berlin)27/07/2026, 15:00
Current discrepancies between inclusive and exclusive determinations of the CKM matrix-element $V_{us}$ necessitate the inclusion of isospin-breaking effects to reach sub-percent precision. Here we present some results of an exploratory study of the determination of the inclusive hadronic decay-rate of the tau lepton without neglecting isospin-breaking effects. To allow charged states to...
Go to contribution page -
Mr Jonah Eick (Columbia University)27/07/2026, 15:00
We report on the current status of the renormalization-group preconditioned conjugate gradient (RGPCG) for domain wall fermions (DWF), an algorithm that leverages the correspondence between low modes of the Dirac operator on ensembles related by RG-blocking to produce a preconditioner with small setup overhead. We have studied this approach for Möbius DWFs on a fine $a^{-1} = 2$ GeV lattice,...
Go to contribution page -
Mika Lauk (HU-Berlin)27/07/2026, 15:004Theoretical developments and applications beyond the Standard ModelContributed talk
The two-dimensional $O(3)$ nonlinear sigma model is a well known toy model for studying non-perturbative phenomena in quantum field theory and QCD. With the latter it shares the fact that there is a non-trivial topological structure and the path integral splits into topological sectors. In the lattice theory topology can be defined as well, but semi-classical arguments suggest that the...
Go to contribution page -
Donald Sinclair (Argonne National Laboratory)27/07/2026, 15:20Theoretical developments and applications beyond the Standard ModelContributed talk
We use RHMC simulations to study chiral symmetry breaking for massless lattice QED in a strong external magnetic field. Our earlier simulations had shown that chiral symmetry is broken by a strong external magnetic field $B$ with $eB=2\pi\times100/36^2=0.4848...$ at bare coupling $\alpha=1/5$ and predicted the condensate in the massless limit. We had later performed simulations with a...
Go to contribution page -
Dr Peter Boyle27/07/2026, 15:20
We study and visualize the process of topology change in field transformation hybrid Montecarlo, correlating gauge and fermion forces with changes in the chiral mode structure of the Domain Wall fermion operator. We see that in each trajectory there are multiple changes of topology by both flowed gauge measures and by the Domain wall fermion index. These appear to correspond to small scale...
Go to contribution page -
Gunnar Bali (Universität Regensburg), Giovanni Pederiva (FZ Jülich)27/07/2026, 15:20
The International Lattice Data Grid (ILDG) is a global infrastructure for data sharing. It currently mainly aims for sharing ensembles of gauge field configurations. We present the status of the redesigned version of this infrastructure (ILDG 2.0), together with first user-experiences. A short live demonstration of basic functionalities will be carried out.
Go to contribution page -
David Mason (JSC)27/07/2026, 15:20
The electromagnetic coupling at the $Z$ pole, $\alpha_{\text{em}}(M_Z^2)$, is a key input for electroweak precision tests and searches for physics beyond the Standard Model. Fully exploiting the potential of future collider experiments will require a significant reduction of the theoretical uncertainties on this quantity. The dominant source of uncertainty stems from the hadronic running of...
Go to contribution page -
William Jay (Colorado State University)27/07/2026, 15:20
Smeared spectral functions play a central role in the extraction of many inclusive hadronic observables. This talk will discuss recent work on kernel transformations, a framework for transforming between smeared spectral functions computed using different smearing kernels. Analytic and regulated solutions will be presented, with an emphasis on controlling the effect of any intermediate...
Go to contribution page -
Valery Simonyan (University of Maryland)27/07/2026, 15:20Quantum computing and quantum informationContributed talk
Quantum computers can produce real time correlators of field theories. We adapt the generalized eigenvalue problem to these real-time correlators in order to extract energy eigenvalues. We test the method with both simulations in classical computers and on actual quantum hardware. We are able to resolve several low-lying energy levels, in agreement with exact diagonalization results. We also...
Go to contribution page -
Christian Kummer27/07/2026, 15:20
Nucleon Mellin moments of parton distribution functions and generalized parton distributions are computed up to the fourth order in lattice QCD. The computation is performed using one ensemble of twisted mass fermions at the physical pion mass point. We employ boosted frames to access the higher-order Mellin moments of generalized parton distributions. We also extract the generalized...
Go to contribution page -
Sinya Aoki27/07/2026, 15:201Hadronic and nuclear spectrum and interactionsContributed talk
A systematic framework for constructing optimized interpolating operators strongly coupled to QCD two-particle states is developed, which is achieved by incorporating inter-hadron spatial wavefunctions. To efficiently implement these operators in lattice QCD, a novel quark smearing technique utilizing noise vectors is proposed. Applied to the $\Omega_{ccc}\Omega_{ccc}$ system, these optimized...
Go to contribution page -
Evan Berkowitz (University of the Virgin Islands)27/07/2026, 16:10Theoretical developments and applications beyond the Standard ModelContributed talk
Because it offers exactly-integer topological quantities, the modified Villain discretization offers a route to correct anomaly structure at finite lattice spacing. I will present a 4-dimensional purely-bosonic modified Villain model with an ABJ-type vector-vector-axial anomaly.
The model appears to have a direct continuous phase transition from one SSB phase to another, giving hope of...
Go to contribution page -
Christoph Lehner (Universität Regensburg)27/07/2026, 16:10
I will discuss several aspects of the RBC/UKQCD high-precision DWF physics program including the generation of new gauge ensembles with 2+1 and 2+1+1 flavors up to cutoffs of a^{-1}=11 GeV, dynamical QCD+QED simulations with local vector currents and chiral symmetry, and an improvement to our distillation program. I will give an outlook of the impact of these developments for the g-2 and...
Go to contribution page -
Ankur Singha (Technical University Berlin)27/07/2026, 16:10
We propose a multilevel generative sampling framework for lattice gauge theories designed to overcome topological freezing by explicitly sampling all relevant topological sectors. The target distribution is decomposed into coarse and fine scales using an RG-inspired blocking strategy. At each level, the generative sampler produces plaquette degrees of freedom and reconstructs consistent...
Go to contribution page -
Joshua Miller27/07/2026, 16:10
In recent years, methods such as large momentum effective theory (LaMET) and short distance factorization (SDF) have allowed us to extract the $x$-dependence of parton distribution functions (PDFs) utilizing non-local operators of a boosted hadron. Contained within the PDFs is information on fundamental hadronic properties, such as the fraction of the hadron momentum carried by quarks, which...
Go to contribution page -
David Rogerson (Rutgers University)27/07/2026, 16:10Quantum computing and quantum informationContributed talk
Classical tensor networks and hybrid quantum-classical algorithms offer a promising path toward simulating the real-time dynamics of lattice gauge theories. In this talk, we present a novel framework that strictly enforces gauge symmetry via a virtual quantum-link rishon representation. Crucially, both gauge and matter degrees of freedom are treated as dynamical variables encoded directly into...
Go to contribution page -
Ian Van Schalkwyk27/07/2026, 16:101Hadronic and nuclear spectrum and interactionsContributed talk
The accurate determination of the electromagnetic form factor of the pion ($F_\pi (Q^2)$) is of direct phenomenological relevance for upcoming experiments and understanding the transition between non-perturbative and perturbative QCD. Calculations of $F_\pi (Q^2)$ using Lattice QCD have traditionally presented significant challenges. We present new calculations from the QCDSF collaboration of...
Go to contribution page -
Xiangyu Jiang (Indiana University)27/07/2026, 16:10
We developed PyQUDA, a Python wrapper for QUDA written in Cython, designed to facilitate lattice QCD calculations using the Python programming language. PyQUDA leverages the optimized linear algebra capabilities of NumPy/CuPy/PyTorch, along with the highly optimized lattice QCD operations provided by QUDA to accelerate research. This integration simplifies the process of writing calculation...
Go to contribution page -
Mr Gabriele Morandi (Università degli Studi di Milano - Bicocca)27/07/2026, 16:302Hadronic and nuclear spectrum and interactionsContributed talk
In this work we present the first determination of the time-like isovector two-pion form factor from Lattice QCD from an infinite-volume approach based on inverse-problem techniques. Starting from a three-point correlation function involving the vector current and two temporally displaced pion interpolating operators, we reconstruct the spectral density related to the $\gamma\to\pi\pi$...
Go to contribution page -
Justus Kuhlmann (ETH Zürich)27/07/2026, 16:30
We present recent developments in the openQxD code, developed by the RC* collaboration. We focus on first steps towards offloading parts of the HMC algorithm using the recently completed interface of our code to the solvers implemented in the QUDA library. As a first high-impact step, the inversions necessary for the pseudo fermion force are offloaded. We provide a breakdown of the time spent...
Go to contribution page -
Tatsuya Yamaoka (The university of Osaka)27/07/2026, 16:301Theoretical developments and applications beyond the Standard ModelContributed talk
We investigate the mass term structure and anomalies of the 3+1-dimensional staggered fermion Hamiltonian. We show that the lattice Hamiltonian possesses conserved charges generating the Onsager algebra, which realize $\mathrm{U}(1)_{F_i} \subset \mathrm{SU}(2)_L \times \mathrm{SU}(2)_R$ $(i = x, y, z)$ in the continuum limit. We classify all bilinear mass terms local within a unit cube and...
Go to contribution page -
Roberto Dionisio (University of Pisa, INFN sez. di Pisa)27/07/2026, 16:30
Efficient sampling across topological sectors is one of the central algorithmic challenges in lattice field theory. Approaches based on interpolating distributions, such as parallel tempering with defects and learned-flow methods, improve ergodicity by connecting an easily sampled reference system to the target theory, but their efficiency depends strongly on the choice of interpolation path....
Go to contribution page -
Joseph Torsiello (Temple University)27/07/2026, 16:30
We present a calculation of the $x$ dependence of unpolarized quark GPDs for the pion and kaon on an $N_f=2+1+1$ ensemble of maximally twisted-mass fermions with a clover term, with lattice volume $32^3\times64$, lattice spacing $a=0.0934$ fm, and pion mass $m_\pi=260$ MeV. The matrix elements contain boosted hadrons coupled to nonlocal operators and are computed for momentum boosts up to 2...
Go to contribution page -
Luis Hidalgo27/07/2026, 16:301Quantum computing and quantum informationContributed talk
In this talk, I present a Hamiltonian for lattice SU($N_c$) gauge theory with staggered and Wilson fermions. A theta angle is also included as part of either a pure-gauge term or a complex fermion mass. The physical, gauge-invariant Hilbert space is formulated in a representation basis, where gauge and fermionic degrees of freedom can be encoded by irreducible representations of SU($N_c$) that...
Go to contribution page -
Jonas Hildebrand (University of Connecticut)27/07/2026, 16:30
We present the strategy for non-perturbative renormalization of $K\to\pi\pi$ decay matrix elements in the next continuum limit calculation of direct CP violation parameter $\varepsilon'$ using the RBC/UKQCD collaboration's 2+1 flavor physical point Iwasaki ensembles, with inverse lattice spacings 1.73 GeV (48I) and 2.36 GeV (64I). The new NPR program relies on ten ensembles with half of the...
Go to contribution page -
Jinlong Dang (Peking University)27/07/2026, 16:50Theoretical developments and applications beyond the Standard ModelContributed talk
The Standard model as a chiral gauge theory is the core foundation of particle physics. Yet, no consensus has been reached on non-perturbative formulations of chiral gauge theories although a few number of promising theoretical models have been constructed. In this work, we exam the extra dimension or domain wall fermion approach. Firstly, we numerically tested the slab (Grabowska-Kaplan)...
Go to contribution page -
Constantinos Costa (Rinnoco Ltd)27/07/2026, 16:50
We present a data-storage and compression tool for managing the large expressions generated in lattice perturbative calculations. A similar strategy may also be applied to numerical nonperturbative data, and this extension is planned for a future version of the tool. In perturbative calculations involving stout-smeared links and improved lattice actions, intermediate expressions may contain...
Go to contribution page -
S.-P. Alex Chang (Institute of Physics, National Yang Ming Chiao Tung University)27/07/2026, 16:50
The light-cone distribution amplitude (LCDA) is a non-perturbative quantity for understanding hadron structure and exclusive scattering processes. We present our calculation of moments of the pion and kaon LCDAs using the heavy-quark operator product expansion (HOPE) framework. This method employs an OPE analysis of hadronic amplitudes through the inclusion of a fictitious valence heavy...
Go to contribution page -
Luka Jevsenak (University of Ljubljana, Faculty of Mathematics and Physics)27/07/2026, 16:50Hadronic and nuclear spectrum and interactionsContributed talk
We determine the physical pole position of the $\rho$ resonance in $\pi\pi$ scattering using four gauge-field ensembles with 2+1 dynamical quark flavors implemented with a clover improved Wilson action. The ensembles have pion masses $m_\pi = 317,\ 296,\ 174,\ 291$ MeV and lattice spacings $a = 0.114,\ 0.090,\ 0.088,\ 0.068$ fm. For each ensemble, we obtain the $\pi\pi$ energy spectra for...
Go to contribution page -
Gianluca Fuwa (Bergische Universität Wuppertal)27/07/2026, 16:50
As the continuum limit is approached, conventional update algorithms in lattice QCD and other topologically non-trivial theories suffer from a particularly severe form of critical slowing down, caused by high action barriers separating distinct topological sectors. Parallel tempered Metadynamics (PT-MetaD) has been shown to overcome this problem by pairing, in the simplest case, the physical...
Go to contribution page -
Juan Antonio Gil Fraile27/07/2026, 16:50Quantum computing and quantum informationContributed talk
Gluons in unpolarized hadrons exhibit nontrivial spin-orbit correlations, which at sufficiently small longitudinal momentum fractions, can be characterized by highly entangled quantum states. In this work, we develop a quantum simulation framework to study the coupling between the intrinsic helicity and orbital angular momentum of a gluon on a quantum computer. We extend our framework to...
Go to contribution page -
Masaaki Tomii27/07/2026, 16:50
The resent status of RBC/UKQCD's long-time project on $K\to\pi\pi$ decay will be presented. A central focus of this talk will be a study of possible systematic effects in interpolating finite-volume matrix elements, computed for the ground and first excited two-pion states obtained with periodic boundary conditions, to the physical kinematics. As a sensitive diagnostic of this interpolation...
Go to contribution page -
Julian Parrino (University of Regensburg)27/07/2026, 17:10
In the current determination of the muon g-2, the hadronic vacuum polarization (HVP) contribution⸺which dominates the theoretical uncertainty⸺is evaluated as an average of different lattice QCD calculations. Since lattice simulations are mostly carried out in isospin symmetric QCD, corrections due to the mass difference of the up and down quarks (strong IB) and the coupling to photons (QED...
Go to contribution page -
Victor Granados-Pinto (Universität Bern)27/07/2026, 17:10
In Lattice QCD, standard Markov Chain Monte Carlo (MCMC) algorithms exhibit topological freezing: As the continuum limit is approached, the autocorrelation times of topological observables increase exponentially. As a result, ergodicity is effectively lost and statistical error estimates become unreliable. A method to mitigate this is Parallel Tempering on Boundary Conditions (PTBC). The...
Go to contribution page -
Jakob Hoffmann (Goethe University, Frankfurt)27/07/2026, 17:10Hadronic and nuclear spectrum and interactionsContributed talk
In this talk, we present a finite-volume scattering formalism to study temporal size effects on hadronic resonances using lattice QCD. We use the concept of thermoparticles to derive a finite-temporal size two-particle quantization condition which relates scattering amplitudes to two-particle energies computed in a finite spatial and temporal volume.
Go to contribution page -
Soma Onoda (Kyushu University)27/07/2026, 17:10Theoretical developments and applications beyond the Standard ModelContributed talk
A central challenge in formulating chiral gauge theories on the lattice is to realize the anomaly-cancellation mechanism of the continuum theory at finite lattice spacing. In this talk, I present a bosonization-based lattice formulation for two-dimensional non-Abelian chiral gauge theories.
In the continuum bosonized description, the gauge anomaly of chiral fermions is encoded as anomaly...
Go to contribution page -
Nikolai Husung (CERN)27/07/2026, 17:10
Constructing minimal operator bases with prescribed transformation properties under discrete symmetries is a recurring task in lattice QCD. Examples include lattice artifacts of local operator insertions, such as the axial vector current, or the construction of interpolating fields with given quantum numbers. The Python package opbasis automates this derivation, with common lattice...
Go to contribution page -
Nabil Humphrey27/07/2026, 17:10
Spin-1 deep-inelastic scattering targets admit four tensor-polarised structure functions $b_1$–$b_4$ in addition to those of spin-1/2 systems. We present a theoretical framework for the extraction of the tensor-polarised structure functions of general spin-1 systems from the Compton amplitude calculated using the Feynman–Hellmann method, while accounting for the contamination from certain...
Go to contribution page -
Jana N. Guenther (University of Wuppertal)28/07/2026, 09:00
The lattice-QCD exploration of the QCD phase diagram has advanced considerably in recent years through increasingly precise calculations of thermodynamic observables and fluctuations of conserved charges.
Go to contribution page
These developments have improved our understanding of strongly interacting matter at finite temperature and density and provided new insights into the QCD transition region.
This overview... -
Daniel Hackett28/07/2026, 09:45
I review recent advancements in machine learning and artificial intelligence for lattice field theory, with emphasis on flow-based methods and their applications, as well as agentic AI.
Go to contribution page -
Thomas Spriggs (QuTech and Delft University of Technology)28/07/2026, 11:00
In this talk I will give an introduction to neural network quantum states: a flexible, gauge-symmetry-aware, approach to find the ground state wavefunction of Abelian and non-Abelian lattice gauge theories. I will introduce this method in the context of spin systems, where it was first developed, briefly touching upon some of the applications in condensed matter and quantum chemistry, before...
Go to contribution page -
Antonio Smecca (INFN - Sezione di Roma Tre)28/07/2026, 11:30
The $U(1)_A$ symmetry is explicitly broken by the axial anomaly, but it may be effectively restored at finite temperature. Over the years lattice QCD studies presented contradictory evidence as to whether this restoration occurs near the chiral transition temperature. In this talk I will review recent theoretical and numerical developments on the fate of $U(1)_A$ in hot QCD, including results...
Go to contribution page -
Steven Gottlieb (Indiana University)28/07/2026, 12:00
Robert Louis Sugar, known to his friends and colleagues as Bob, played a major role in lattice field theory and, more generally, in theoretical physics. He developed algorithms for condensed matter problems and lattice QCD. He was one of the four founders of the Institute of Theoretical Physics at Santa Barbara funded by National Science Foundation, now known as the Kavli Institute of...
Go to contribution page -
Ramón Merino (Universidad de Granada)28/07/2026, 14:00
We review the status of a new analysis by the Fermilab Lattice and MILC collaborations towards a correlated determination of SU(3) Chiral Perturbation Theory (ChPT) low-energy constants (LECs). The analysis is based on chiral-continuum fits to light-meson mass and decay constant data generated using highly improved staggered quarks (HISQ) on the $N_f=2+1+1$ MILC HISQ ensembles. Our fitting...
Go to contribution page -
James Osborn28/07/2026, 14:00
We present a generalization of the dynamics used in HMC that allows for an arbitrary range of auxiliary field content along with freedom in choosing the dynamics (including non-symplectic dynamics), constrained mainly by the Metropolis-Hastings acceptance requirement. We will discuss how the generalized dynamics relates to other HMC variations that have appeared in the literature. We will...
Go to contribution page -
Anna Hasenfratz28/07/2026, 14:00
We present a practical gradient-flow (GF) renormalization scheme for composite fermion operators based on conserved-current correlation functions. The method determines the fermion wave-function renormalization nonperturbatively from simple two-point correlators, avoiding the need for calculating local flowed operators. The resulting GF-renormalized operators are finite at nonzero flow time...
Go to contribution page -
Wayne Morris (National Yang Ming Chiao Tung University)28/07/2026, 14:00Structure of hadrons and nuclei
The Collins-Soper kernel is a key, universal quantity that relates transverse momentum dependent distributions (TMDs) at different rapidity scales through an evolution equation. The CS kernel may be obtained through the TMD soft function by formulating the Wilson line in terms of 1-dimensional auxiliary fermion fields on the lattice. The complex auxiliary field directional vectors can be...
Go to contribution page -
Adwait Naravane (Ghent university)28/07/2026, 14:003Quantum computing and quantum informationContributed talk
Tensor networks offer a sign-problem-free framework for studying lattice field theories, provide direct access to partition functions, free energies, and correlation functions through controlled, deterministic approximations. This introductory talk aims to bridge the gap for the lattice community by presenting the essential concepts and computational tools of the tensor network approach.
Go to contribution page
I... -
Nuno Brito (University of Plymouth)28/07/2026, 14:002Theoretical developments and applications beyond the Standard ModelContributed talk
We investigate the low-lying flavour-singlet spectrum of an $Sp(4)$ lattice gauge theory with fermions in both the fundamental and two-index antisymmetric representations, using the Wilson gauge action and Wilson fermions. Our analysis employs a generalized eigenvalue problem on a basis of smeared interpolating operators comprising glueball and meson operators from both fermion representations...
Go to contribution page -
Matteo Saccardi (Colorado State University)28/07/2026, 14:006Hadronic and nuclear spectrum and interactionsContributed talk
Spectral densities encode key QCD observables, including hadronic decay rates, cross sections, and transport properties of the quark-gluon plasma. Their Laplace transform corresponds to Euclidean correlation functions, which can be accessed non-perturbatively from first-principles lattice QCD. In this talk, we present analytic formulae to carry out the inverse Laplace transform so as to...
Go to contribution page -
Artur Avkhadiev28/07/2026, 14:20
This talk will present the first nonperturbative constraints on the gluon (CS) Collins-Soper kernel — a universal anomalous dimension of transverse-momentum-dependent gluon distributions — in the range of transverse momentum scales $q_{T} \in [300\text{ MeV}, 1.3\text{ GeV}]$. The constraints are obtained with lattice QCD at a close-to-physical pion mass $M_\pi = {172(3)}\text{ MeV}$, a single...
Go to contribution page -
Etsuko Itou28/07/2026, 14:202Quantum computing and quantum informationContributed talk
We investigate the entanglement structure of the 2+1-dimensional Z_2 lattice gauge theory using tensor-network methods. We construct gauge-invariant ground state based on the gauged Gaussian PEPS (GGPEPS) ansatz proposed by Zohar et al., which automatically satisfies Gauss’ law. This ansatz enables us to study the theory over a wide range of coupling constants while keeping gauge invariance...
Go to contribution page -
Takeshi Yamazaki (University of Tsukuba)28/07/2026, 14:20
We present a calculation of the form factors for the kaon semileptonic decay process using the $N_f=2+1+1$ PACS10$_c$ configurations. These configurations are generated with the Iwasaki gauge action and the $N_f=2+1+1$ stout-smeared nonperturbatively $O(a)$ improved Wilson quark action at the three lattice spacings, 0.08, 0.06, and 0.04 fm. The spatial volume of the configurations is larger...
Go to contribution page -
Alexis Harilaos Verney-Provatas (Swansea University/The University of Edinburgh)28/07/2026, 14:20Theoretical developments and applications beyond the Standard ModelContributed talk
We investigate, for the first time, the Sp(4) lattice gauge theory in the presence of fermions at finite temperature, examining the theory with two dynamical Wilson fermions in the fundamental representation. The continuum theory is of interest as it provides a realisation of composite dark matter and may generate an observable stochastic gravitational wave signal, sourced by a phase...
Go to contribution page -
Diego Toniolo (University of Milan-Bicocca)28/07/2026, 14:202Hadronic and nuclear spectrum and interactionsContributed talk
Spectral densities encode key QCD observables, including hadronic decay rates, cross sections, and transport properties of the quark-gluon plasma. Their Laplace transform corresponds to Euclidean correlation functions, which can be accessed non-perturbatively from first-principles lattice QCD. Building on our formalism describing how spectral functions can be reconstructed from integral...
Go to contribution page -
Mingwei Dai (University of Illinois Urbana-Champaign)28/07/2026, 14:20
Renormalized quark masses are fundamental parameters of the Standard Model, serving as critical inputs for theoretical predictions across a wide range of physics processes. In this work, we study Highly Improved Staggered Quark (HISQ) ensembles in the gradient flow lattice scheme. Using a small subset of our physical point ensembles, we compute flow-time-dependent renormalized quark masses...
Go to contribution page -
Robert Mawhinney (Columbia University)28/07/2026, 14:20
In this talk we study the impact of altering the standard Hybrid Monte Carlo in numerous small subvolumes of a larger lattice. A primary alteration considered is to fix each subvolume to a maximal tree gauge, such as axial gauge, and then choose conjugate momenta that are not site-local in the subvolume, but rather have spatial coherence acress the subvolume. We focus on pure SU(3) gauge...
Go to contribution page -
Curtis Peterson (Michigan State University)28/07/2026, 14:40
The strong coupling $\alpha_{\mathrm{s}}(m_{Z})$ at the pole mass $m_{Z}$ of the $Z$ boson is a fundamental parameter of the Standard Model. I discuss ongoing efforts targeting a precise determination of the strong coupling from the continuous (infinite volume) gradient flow $\beta$-function using the highly improved staggered quark (HISQ) action.
Go to contribution page -
Yang Fu (MIT)28/07/2026, 14:40
We will present preliminary results on a lattice QCD study of the gluon Collins-Soper kernel using Coulomb-gauge gluon operators. This kernel governs the rapidity evolution of transverse-momentum-dependent gluon distributions and is nonperturbative at small transverse momentum. The calculation is performed at near-physical pion mass and shows improved statistical precision with this approach.
Go to contribution page -
Gianmarco Simonetti (The University of Edinburgh/Swansea University)28/07/2026, 14:40Theoretical developments and applications beyond the Standard ModelContributed talk
We present an extensive study of Möbius domain wall fermions (MDWF) in four-dimensional $Sp(4)$ gauge theory with two dynamical fermions transforming in the fundamental representation. This is, to our knowledge, the first comprehensive application of MDWF to $Sp(4)$ lattice gauge theories, which are relevant to composite Higgs and dark matter models based on the $SU(4)/Sp(4)$ coset. The MDWF...
Go to contribution page -
Francesco Sanfilippo (INFN Roma Tre)28/07/2026, 14:40
We illustrate the results of our recent study of the rare kaon decay $K^{-}\to \ell'^{+}\ell'^{-}\ell^{-}\bar{\nu}_{\ell}$, known as $K_{\ell2\ell'}$ , based on Twisted-Clover simulations at the physical point carried out by ETM collaboration.
The $K_{\ell2\ell'}$ form factors, which have been recently submitted to arXiv:2605.22742, are extrapolated to the continuum limit using three...
Go to contribution page -
Davide Laudicina (Ruhr Universität Bochum)28/07/2026, 14:406Hadronic and nuclear spectrum and interactionsContributed talk
We present a strategy, based on spectral reconstruction techniques, to extract ground-state energies of Euclidean correlators from smeared observables. The reconstruction acts as a filter on the higher-lying spectrum, suppressing excited-state contamination with respect to the original correlator. The residual contamination is controlled by the smearing hyperparameters, providing an...
Go to contribution page -
Molly Kaplan (Inria/Mines Paris - PSL)28/07/2026, 14:40Quantum computing and quantum informationContributed talk
In this talk, I introduce a variational method to solve continuum quantum models with discrete tensor network techniques. The method leverages wavelet matrix product states (wMPS): matrix product states built on top of sufficiently regular ($N\geq 6$) Daubechies scaling functions. These states live in the continuum field theory Fock space, have finite energy density, and can be optimized with...
Go to contribution page -
Masafumi Fukuma (Kyoto University)28/07/2026, 14:40
The Worldvolume Hybrid Monte Carlo (WV-HMC) method is designed to address the numerical sign problem while avoiding the ergodicity issues inherent in the Lefschetz thimble method. Using a general prescription for applying WV-HMC to group manifolds, I demonstrate its successful application to lattice gauge theories with complex actions.
Go to contribution page -
Akira Matsumoto (Graduate School of Science, Osaka Metropolitan University)28/07/2026, 15:00Quantum computing and quantum informationContributed talk
Clifford circuit is a special type of quantum circuit that can generate entanglement states while remaining easily simulable on classical computers. Recently, Clifford-circuits augmented MPS (CAMPS) has been proposed, which consists of the Clifford circuit and matrix product state (MPS). The CAMPS can describe strongly entangled states with smaller bond dimensions than the ordinary MPS. In...
Go to contribution page -
Xiao-Yong Jin28/07/2026, 15:00
We explore how a change of variables impacts HMC sampling in lattice gauge theories. Using a 2D U(1) pure gauge system as a testbed, we introduce a local change of variables while keeping the computational cost of the Jacobian low. We analyze how different formulations affect the effective action and the effective force, comparing them to existing field transformation techniques in the...
Go to contribution page -
Francesca Argia Bresciani (University of Milano-Bicocca)28/07/2026, 15:007Hadronic and nuclear spectrum and interactionsContributed talk
We present a general framework for quantifying finite-volume effects on smeared spectral densities and apply the result both formally and numerically to the vector-vector channel. Using two independent approaches — finite-volume corrections to Euclidean two-point functions and the Lellouch-Lüscher-Meyer formalism — we show that the leading dependence on the box size is exponentially suppressed...
Go to contribution page -
Andre Walker-Loud (Lawrence Berkeley National Laboratory)28/07/2026, 15:00
I will describe our new lattice action using Möbius Domain Wall Fermions (MDWFs). The gauge action is tree-level Symanzik-improved with a rectangle coefficient of $c_1=-1/12$ and bare coupling $\beta$. The four flavors of MDWF utilize a Dirac operator with 8 iterations of Stout link smearing with $\rho=1/8$, which is comparable to gradient-flow smearing radius of 1 in lattice units. A...
Go to contribution page -
Jinchen He (University of Maryland)28/07/2026, 15:00
We present the first lattice-QCD determination of isovector proton transverse-momentum-dependent parton distribution functions (TMDPDFs) simultaneously in the unpolarized, helicity, and transversity channels. The calculation is performed within large-momentum effective theory using Coulomb-gauge-fixed quasi-TMD correlators on a $2+1$-flavor domain-wall fermion ensemble at the physical pion...
Go to contribution page -
Max Hansen28/07/2026, 15:00
We report on recent progress in extracting multi-hadron $D$ decay amplitudes in a pilot study using three ensembles of stabilised Wilson fermions at the SU(3) flavour-symmetric point. Our focus is on the analogue of $D \to K\pi$, where the final state is in the flavour 27-plet. The calculation involves two key steps: determining the finite-volume spectrum for five total spatial momenta in a...
Go to contribution page -
Yannick Meurice (University of Iowa)28/07/2026, 15:00Theoretical developments and applications beyond the Standard ModelContributed talk
We discuss recent numerical results for the zeros of the partition function for a four dimensional SU(3) lattice gauge theory with 12 staggered fermions having identical masses and an unimproved action (arXiv: 2606.14642).
Go to contribution page
Our results indicate that beyond some critical mass, a gap between the lowest zero and the real axis in the complex coupling plane develops and can be related to the... -
Zack Hall (Lawrence Berkeley National Laboratory)28/07/2026, 15:20
We present a determination for the ratio of light and D meson decay constants in lattice QCD. This work employs a new four flavor Möbius Domain Wall fermion action with 30 ensembles across five lattice-spacings, multiple volumes, and a range of pion mass down to the physical point. In this talk we will discuss our calculation and extrapolation analyses, giving $F_{K^{\pm}}/F_{\pi^{\pm}}$ =...
Go to contribution page -
Yacob OZDALKIRAN (IJCLab, Orsay)28/07/2026, 15:20
Based on https://arxiv.org/abs/2606.21217, we present two adaptations of the Event-Chain Monte Carlo algorithm for pure gauge lattice QCD. The algorithms rely on continuous deterministic updates interrupted by stochastic events, creating an irreversible, rejection-free Markov process that satisfies global balance. We detail the construction of these algorithms and present numerical results on...
Go to contribution page -
Jyn Peyton (New Mexico State University)28/07/2026, 15:20
One of the foremost goals of research into Quantum Chromodynamics (QCD) is to quantify the internal structure of the proton from first principles. Ab initio calculations of QCD matrix elements like transverse momentum distributions (TMDs) using lattice QCD are an essential part of achieving that goal. I present first explorations of effects on TMDs induced by the more intricate color flows in...
Go to contribution page -
Sophie Mutzel (Mines Paris, ENS Paris, Inria Paris)28/07/2026, 15:201Quantum computing and quantum informationContributed talk
Variational methods based on tensor networks have recently emerged as powerful non-perturbative tools for studying low-dimensional quantum field theories. Relativistic continuous matrix product states (RCMPS) allow certain 1+1 dimensional relativistic quantum field theories to be solved directly in the continuum and thermodynamic limits, without ultraviolet or infrared cutoff.
In this talk...
Go to contribution page -
Dr Marios Costa (Cyprus University of Technology)28/07/2026, 15:202Theoretical developments and applications beyond the Standard ModelContributed talk
We present a lattice formulation of $\mathcal{N}=1$ supersymmetric QCD (SQCD) based on overlap fermions, providing a discretization consistent with the Ginsparg–Wilson relation. Particular emphasis is placed on the construction of Yukawa terms that preserve a lattice-modified chiral symmetry involving overlap quarks and gluinos. To realize this modified chiral symmetry in the Yukawa sector, we...
Go to contribution page -
Ryutaro Tsuji (KEK)28/07/2026, 15:203Hadronic and nuclear spectrum and interactionsContributed talk
Reconstructing spectral densities from lattice correlators requires an inverse Laplace transform, which is inherently ill-conditioned. Although there are many approaches to tackle this problem, systematic errors need to be carefully examined. In this talk, we propose a method with a singular value decomposition of the Laplace kernel, in which systematic error can be bounded under reasonable...
Go to contribution page -
Alex Sturzu (William and Mary)28/07/2026, 16:10
We present our recent results for the gluon momentum fraction of the nucleon using lattice quantum chromodynamics (QCD), with a nonperturbative renormalization technique based on the gradient flow. Various techniques are used to reduce statistical and systematic uncertainties. The variational method is used to reduce excited-state contamination. Distillation is employed to reduce the costs...
Go to contribution page -
Jaakko Hällfors28/07/2026, 16:10Theoretical developments and applications beyond the Standard ModelContributed talk
First-order phase transitions are common in many beyond the Standard Model theories. Nucleating transitions are particularly interesting, since they leave behind a gravitational wave background (GWB) that could be observable in many near-future experiments. The nucleation rate determines how fast the transition completes and is needed for precision predictions of the GWB.
Typically, the...
Go to contribution page -
Alexis Harilaos Verney-Provatas (Swansea University/The University of Edinburgh)28/07/2026, 16:10
We present hmcdj, a new tool developed to ease the process of generating large numbers of gauge ensembles for a given theory. Building on top of the Grid library, hmcdj allows quick specification of theories in C++ with minimal boilerplate, and precise specification of per-ensemble parameters to be controlled at run time from a YAML input file. Additionally, it supports many quality-of-life...
Go to contribution page -
Klemen Kersic (ETH Zürich)28/07/2026, 16:107Hadronic and nuclear spectrum and interactionsContributed talk
Due to the long-range nature of QED, finite-volume corrections to observables appear as inverse powers of lattice extent, which may be much larger than the exponentially suppressed corrections. For precision computations, it is crucial to determine these effects, which depend on the QED formulation. As a first step, we investigate the power-law finite-volume effects in the QCD+QED setup with...
Go to contribution page -
Prof. Shailesh Chandrasekharan (Duke University)28/07/2026, 16:10
We present a continuous-time path-integral Monte Carlo method for computing the low-lying spectrum of generic quantum lattice Hamiltonians, motivated in part by applications to qubit regularizations of quantum field theories. The method is based on projecting the thermal density matrix, $e^{-\beta H}$, onto a subspace spanned by a chosen set of linearly independent states. It is free of...
Go to contribution page -
Aatu Rajala (University of Helsinki)28/07/2026, 16:101Quantum computing and quantum informationContributed talk
In this talk, I will present our argument that, in the limit of large subregions, the derivative of entanglement entropy (EE) with respect to the size of the entangling region approaches the thermal entropy density for general QFTs. We provide validation for these claims from our lattice computations in the three-dimensional O(4) model at finite chemical potential by showing that in the...
Go to contribution page -
Norman Christ (Columbia University)28/07/2026, 16:10
We discuss the counter terms needed to renormalize our recent $K\to\mu^+\mu^-$ decay calculation (Phys.Rev.D 113 (2026) 7, 074523). Three different classes of divergent sub-diagrams are identified and the steps needed to renormalize them described. The relation between these classes and the five distinct types of quark contractions is described in terms of an expansion in powers of $\alpha_s$...
Go to contribution page -
Dominic Schuh (University of Bonn)28/07/2026, 16:10
The Hubbard model at finite chemical potential is a cornerstone for understanding doped correlated systems, but simulations are severely limited by the sign problem. In the auxiliary-field formulation, the spin basis mitigates the sign problem, yet severe ergodicity issues have limited its use. We extend recent advances with normalizing flows at half-filling to finite chemical potential by...
Go to contribution page -
Paola Tavella (ETH Zürich)28/07/2026, 16:309Hadronic and nuclear spectrum and interactionsContributed talk
Finite-volume effects constitute one of the main sources of systematic uncertainty in lattice determinations of the hadronic vacuum polarization (HVP) contribution to the muon's $g-2$. In this talk, we investigate these effects in a lattice QCD setup with C$^\star$ boundary conditions. We compute the HVP intermediate-window observable on four gauge ensembles generated by the RC$^\star$...
Go to contribution page -
William Good (Michigan State University)28/07/2026, 16:30
Gluon parton distribution functions (PDFs) from large momentum effective theory (LaMET) have remained in poor statistical precision compared to non-singlet PDFs due to their correlators coming solely from disconnected diagrams. One method to improve the long distance signal is to remove the Wilson lines from the correlators, which are present solely to maintain gauge invariance, and compute...
Go to contribution page -
Felicitas Freche28/07/2026, 16:30
In this work, we extend the normalizing-flow-based generalized density-of-states (NF-gDoS) method to the doped Hubbard model. The Hubbard model is known to exhibit a sign problem in the presence of a chemical potential. The NF-gDoS framework is attractive because it reformulates the original complex-weight sampling problem by separating the complex phase from the Boltzmann distribution and...
Go to contribution page -
Dr Raghav G. Jha28/07/2026, 16:301Quantum computing and quantum informationContributed talk
Magic and entanglement quantify departure of quantum systems from classical world: the former measures the deviation from stabilizer states that can be efficiently simulated classically while the latter measures non-local correlations. A proper understanding of magic in physically relevant quantum field theories is essential for identifying where quantum advantage may be realized in the early...
Go to contribution page -
Ceran Hu (Columbia University)28/07/2026, 16:30
We present strategies for determining the counterterm coefficients required to complete our recent calculation of the long-distance contribution to the $K_{\rm L}\to\mu^+\mu^-$ decay amplitude (Phys. Rev. D 113 (2026) 074523). These counterterms are absent in the more convergent four-flavor calculation because of the Glashow–Iliopoulos–Maiani (GIM) cancellation. This allows the required...
Go to contribution page -
Dr En-Hung Chao (Massachusetts Institute of Technology)28/07/2026, 16:30
We propose a hybrid reweighting method to calculate expectation values of observables in the presence of external fields coupled to dynamical fermions. The reweighting factor is calculated from the ratio of fermion determinants with and without the external field, evaluated on a background of Wilson-flowed dynamical gauge fields. Because the Wilson flow greatly reduces ultraviolet...
Go to contribution page -
Johann Ostmeyer (University of Bonn)28/07/2026, 16:30Theoretical developments and applications beyond the Standard ModelContributed talk
The 3D chiral Heisenberg model is a theory of relativistic fermions in three spacetime dimensions with SU(2) symmetry. We simulate it numerically as a lattice field theory using domain wall fermions and locate the phase transition corresponding to spontaneous SU(2)$\to$U(1) breaking. This phase transition belongs to the large "chiral Heisenberg" universality class, containing among others the...
Go to contribution page -
Nobuyuki Matsumoto (Boston University)28/07/2026, 16:30
Riemannian manifold HMC (RMHMC), following the basic idea of Fourier acceleration, has been studied as a viable algorithm toward mitigating critical slowing down. In fact, by using multilevel integration, the algorithmic overhead becomes additive to the fermionic inversion cost that dominates in production runs, especially with domain-wall fermions. Given the rapid development of AI/ML, we...
Go to contribution page -
Max Hansen28/07/2026, 16:50
AmPyL is an open-source Python package for relating finite-volume lattice data to infinite-volume scattering amplitudes, with particular emphasis on three-particle systems. The library provides an object-oriented framework for constructing all aspects of the relativistic-field-theory three-particle formalism, including flavor and spectator channel spaces, finite-volume kinematics,...
Go to contribution page -
Thomas Hauschild (Forschungszentrum Juelich)28/07/2026, 16:50
Auxiliary-field quantum Monte Carlo methods provide a powerful route to unbiased simulations of strongly correlated quantum systems. While determinant quantum Monte Carlo has been highly successful, its standard formulation is naturally adapted to particle-number-conserving Hamiltonians. Pfaffian quantum Monte Carlo extends this framework to systems, that do not conserve particle...
Go to contribution page -
Navya Gupta28/07/2026, 16:501Quantum computing and quantum informationContributed talk
Hamiltonian simulations offer a promising path for computing the nonperturbative real-time dynamics of gauge theories. In this setting, entanglement entropy is both a diagnostic of many-body correlations and, together with other resources, relevant to the cost of representing, preparing, and evolving quantum states. Quantum simulations often employ distinct formulations of the same lattice...
Go to contribution page -
Davide Giusti28/07/2026, 16:50
At current levels of precision, QED corrections to hadronic observables can no longer be neglected. For a broad class of QED regularizations, these corrections generate power-law finite-volume effects on a finite lattice volume, which are a leading source of systematic uncertainty. We revisit the structure and size of QED finite-volume effects, with particular focus on electroweak decay rates...
Go to contribution page -
Janik Kreit (University of Bonn)28/07/2026, 16:50
Generative modeling of strongly correlated fermionic systems has emerged as a promising complement to traditional quantum Monte Carlo methods. Building on recent demonstrations that normalizing flows can learn the Boltzmann distribution of the Hubbard model, we systematically investigate the path toward larger lattice sizes and lower temperatures. We identify the key challenges that arise in...
Go to contribution page -
Aaron Haarti (University of Helsinki)28/07/2026, 16:50Theoretical developments and applications beyond the Standard ModelContributed talk
In pure SU(N) gauge theory, we measure interface tensions between distinct deconfined phases (different $Z_N$-centers) using two complementary methods. These deconfined-deconfined (DD) interface tensions generally depend on the $Z_N$-phase shift across the interface and on the temperature T. We use a twisted boundary condition to produce two ordered phases simultaneously with a DD interface...
Go to contribution page -
Harvey Byron Meyer (CERN)28/07/2026, 16:507Hadronic and nuclear spectrum and interactionsContributed talk
We present a lattice QCD calculation of the charged–neutral pion mass splitting at O($\alpha_{\rm em}$) using a coordinate-space photon propagator regulated à la Pauli-Villars (PV). The calculation is performed using CLS ensembles. The elastic contribution receives a dedicated treatment to reduce finite-size effects and speed up the approach to infinite PV cutoff. The same methods are being...
Go to contribution page -
Sicheng Liu (stony brook)28/07/2026, 16:50
Gluon generalized parton distributions (GPDs) are important quantities for understanding the three-dimensional structure of hadrons. They encode information about the spatial distribution of gluons, as well as the mass and spin structure of hadrons, and provide access to the gluon contribution to orbital angular momentum, which is at the heart of the proton spin puzzle. In this talk, I will...
Go to contribution page -
Alessandro Cotellucci (Forschungszentrum Jülich)28/07/2026, 17:10
Leptonic decay rates are used to extract the elements of the Cabibbo-Kobayashi-Maskawa matrix; reaching sub-per cent precision requires including isospin-breaking effects, i.e., electromagnetic effects and effects from the explicit difference between the up and down quark masses. One of the major sources of systematic error in computing leptonic decay rates in QCD+QED is electromagnetic...
Go to contribution page -
Tian Lin (Peking University)28/07/2026, 17:102Hadronic and nuclear spectrum and interactionsContributed talk
We report a lattice QCD calculation of the neutral pion decay $\pi^0\to\gamma\gamma$ beyond the chiral limit. We develop a three-point-function strategy, based on an anomalous PCAC relation, to extract the finite-quark-mass corrections to the decay amplitude, including both isospin-symmetric and isospin-breaking effects.
Go to contribution page -
Finn Temmen (Forschungszentrum Jülich, IAS-4)28/07/2026, 17:10
Stochastic methods are indispensable tools for studying strongly correlated fermionic systems due to their far more favorable volume scaling than direct approaches such as exact diagonalization (ED) or tensor network methods. However, this improved scaling comes at the cost of new challenges, most notably the sign problem and long autocorrelation times, which severely restrict the accessible...
Go to contribution page -
Petar Sinilkov (IAS-4, Forschungszentrum Jülich)28/07/2026, 17:10
Our central advance is an algorithm that simultaneously stabilizes the determinant and force calculations that holds to machine precision for very large $\beta$ (in units of inverse hopping) while scaling equally well with standard determinant QMC simulations of these systems. Furthermore, our formalism retains the full time-displaced (2-point) Greens function, allowing us to construct any...
Go to contribution page -
Felix Strohkirch28/07/2026, 17:10Theoretical developments and applications beyond the Standard ModelContributed talk
Zigzag graphene nanoribbons are narrow strips of graphene with parallel zigzag edge termination that sparked research interest in recent years due to their distinctive electronic and magnetic properties. They exhibit partially flat edge bands around the Fermi level that host edge-localized states. These edge states give rise to a robust magnetic order. At half-filling, the edges are known to...
Go to contribution page -
Dr Gregoris Spanoudes (University of Cyprus)28/07/2026, 17:10
We apply the Wilson-flow framework in lattice perturbation theory to study the renormalization of non-singlet twist-two quark bilinear operators containing up to five covariant derivatives. These operators are relevant for the determination of the first six moments of parton distribution functions. In our analysis, we derive the relevant Feynman rules by solving the lattice gauge and fermion...
Go to contribution page -
Abhishek Samlodia (Syracuse University)28/07/2026, 17:101Quantum computing and quantum informationContributed talk
We study quantum spin systems on curved geometries in one and two spatial dimensions using tensor networks method. We investigate the information scrambling properties as well as thermodynamic behavior of these systems including correlation functions and entropy scaling.
Go to contribution page -
Charles Kacir (University of North Carolina at Chapel Hill)29/07/2026, 09:001Hadronic and nuclear spectrum and interactionsContributed talk
Neutrinoless double beta decay ($0\nu\beta\beta$) is the most promising low-energy probe of physics beyond the Standard Model (BSM). If experimental searches which are underway detect such decays, understanding which BSM theory best fits the data will require theoretical work to disentangle Standard Model contributions to the process from experimental measurements. The only known way to...
Go to contribution page -
Sebastian Dawid (Indiana University Bloomington)29/07/2026, 09:00Hadronic and nuclear spectrum and interactionsContributed talk
We discuss a model-independent method for determining hadronic resonances from lattice QCD, derived from the $N/D$ representation of a partial-wave two-body amplitude. The new formalism is valid for energies coinciding with arbitrary left-hand cuts of the amplitude.
Go to contribution page -
Alessandro Conigli29/07/2026, 09:00
We report on an ongoing effort to determine the hadronic vacuum polarization contribution to the anomalous magnetic moment of the tau from lattice QCD. The calculation is based on CLS ensembles with $N_f=2+1$ flavours of $O(a)$-improved Wilson fermions, covering five lattice spacings and a range of pion masses, including the physical point. Because of the short-distance nature of this...
Go to contribution page -
Yamil Cahuana Medrano (William and Mary)29/07/2026, 09:00
Extracting parton distribution functions (PDFs) from Lattice QCD is crucial for understanding nucleon structure, but it fundamentally relies on solving a challenging ill-posed inverse problem. In this talk, I will present an overview of my work on addressing this problem within the pseudo-PDF framework. First, I will outline how Gaussian processes (GPs) provide flexible Bayesian priors that...
Go to contribution page -
Alessandro De Santis (Helmholtz-Institut Mainz, Johannes Gutenberg-Universität Mainz)29/07/2026, 09:00
Spectral reconstruction is one of the most challenging and important problems in lattice QCD, as spectral functions are directly related to a wide range of phenomenologically relevant observables. In this talk, I present a novel strategy based on reformulating the reconstruction problem within the framework of Operator Learning using DeepONet neural networks. The network is trained in a...
Go to contribution page -
Yao Ting Su29/07/2026, 09:00Quantum computing and quantum informationContributed talk
Abstract:
Go to contribution page
One of the key issues in studying quantum many-body systems and quantum field theories is characterizing eigenstates of Hamiltonians. However, the exponential growth of the Hilbert space poses a challenge for classical simulations. Tensor Networks, specifically Matrix Product States (MPS), have emerged as a framework to address this by compactly representing many-body wavefunctions... -
Orlando Oliveira29/07/2026, 09:00
A crucial step in extracting physical predictions from lattice QCD simulations is the scale setting, i.e. the determination of the lattice spacing (a) in physical units. Herein, the relative scale setting for different β’s is discussed, using the Landau gauge gluon propagator computed with large statistical ensembles. After setting the relative scales, finite size effects are observed in the...
Go to contribution page -
Miguel Salg (University of Bern)29/07/2026, 09:202Hadronic and nuclear spectrum and interactionsContributed talk
We present a calculation of $NN$ scattering amplitudes in both isospin states, $I = 0$ (deuteron) and $I = 1$ (dineutron), on CLS ensembles with pion masses ranging from 700 MeV down to 200 MeV. A particular focus of our analysis is on the left-hand cut arising from one-pion exchange, which induces effects not accounted for in the usual two-particle finite-volume formalism. We explore two...
Go to contribution page -
Arnau Beltran (JGU Mainz)29/07/2026, 09:20
A detailed understanding of the time kernels entering the time-momentum representation of hadronic vacuum polarization (HVP) observables is a prerequisite for precision lattice determinations of a broad class of quantities. Building on recent analytical developments, we discuss the properties of these kernels and their role in controlling the time integral relevant to HVP observables.
As a...
Go to contribution page -
Ethan Laval (University of Southampton)29/07/2026, 09:20Quantum computing and quantum informationContributed talk
The Quantum Approximate Optimization Algorithm (QAOA)[1] is one of the leading variational quantum algorithms used to prepare the ground state of gauge theories. The design of QAOA is under-pinned by the adiabatic theorem. Recently, there has been a proposed variation of QAOA, DC-QAOA[2], that incorporates counterdiabatic driving in order to speed up the adiabatic process, leading to reduced...
Go to contribution page -
Demetrianos Gavriel29/07/2026, 09:20
Reconstructing spectral information from Euclidean lattice correlators is a central inverse problem in lattice QCD. The correlator is related to the underlying spectrum through a Laplace-type transform, but inverting this relation from finite and noisy data is severely ill-conditioned. In this contribution, we discuss two complementary strategies for approaching this problem. The first...
Go to contribution page -
Qi Shi (Kent State University)29/07/2026, 09:20
We present a lattice QCD calculation of the nucleon unpolarized parton distribution functions (PDFs) at the physical point, with the nucleon boosted to $P_z = 1.78$ and $2.29$ GeV. At a lattice spacing $a = 0.076$ fm, these momenta correspond to $a P_z \lesssim 0.9$, so that lattice-discretization artifacts remain under control, in contrast to earlier physical-mass studies that reached larger...
Go to contribution page -
Sakura Itatani (SOKENDAI / KEK)29/07/2026, 09:20Hadronic and nuclear spectrum and interactionsContributed talk
We study vector current correlators using the singular value decomposition (SVD) of the Laplace kernel, $\exp(-\omega\tau)$, which identifies the components of the spectral function that can be reliably reconstructed from Euclidean correlator data. The vector-current correlator provides access to the spectrum of interacting two-pion states, including the $\rho$-resonance region. We test the...
Go to contribution page -
Andrea Giorgieri (University of Pisa, INFN)29/07/2026, 09:20
We compute the $\Lambda$-parameter of SU($N$) Yang--Mills theories for $N=3,5,8$ using the step-scaling method. We use the gradient flow scale $t_0$ for scale setting, and we implement the step-scaling method in the twisted gradient flow scheme, a finite-volume renormalization scheme that combines twisted boundary conditions with a coupling defined via the gradient flow. By extrapolating our...
Go to contribution page -
Omar Alsheikh29/07/2026, 09:40Quantum computing and quantum informationContributed talk
We introduce the CaRBM algorithm for fixed-depth thermal state preparation. Our algorithm is based on thermal state purification and uses the Restricted Boltzmann Machine (RBM) block-encoding scheme to implement the imaginary-time propagator $e^{-\beta H}$, which is implemented in the quantum circuit in a fixed-depth manner via Cartan decomposition. Our algorithm performs best at high...
Go to contribution page -
Dr Rui Zhang (MIT)29/07/2026, 09:40
Coulomb-gauge quasi-parton distributions can be computed directly in momentum space on a finite lattice, enabled by the commutativity of their renormalization and Fourier transform. This approach removes the formal inverse problem in coordinate-space methods. Our momentum-space pion quasi-distributions agree with coordinate-space results Fourier transformed with asymptotic extrapolation,...
Go to contribution page -
Rosemary Zielinski (Massachusetts Institute of Technology)29/07/2026, 09:40Hadronic and nuclear spectrum and interactionsContributed talk
Lattice QCD calculations of many-body nuclear systems are prohibitively expensive due to the signal-to-noise problem. An alternative framework to compute nuclear observables from first principles is to compute few-nucleon quantities and match them directly to pionless EFT to obtain LECs, which can then be used in nuclear many-body methods. This work employs pionless EFT at the physical pion...
Go to contribution page -
Akio Tomiya (Tokyo Woman’s Christian University)29/07/2026, 09:40
We study topology readout in $SU(3)$ Yang--Mills theory using several gradient-flow actions. We monitor the integerness of the gluonic topological charge $Q(t)$, admissibility-related diagnostics, and the matching between $\mathrm{round} Q(t)$ and the overlap Dirac index as probes of topological sector identification. We compare Wilson, tree-level Symanzik, Iwasaki, and DBW2 flows on Wilson...
Go to contribution page -
Jorge Baeza Ballesteros (DESY Zeuthen)29/07/2026, 09:403Hadronic and nuclear spectrum and interactionsContributed talk
A very popular choice for the fermion action used in lattice computations is the well-known $\mathcal{O}(a)$-improved Wilson action, which has been successfully employed in a wide range of applications. However, experience with this action has also revealed some of its limitations, such as the presence of small and even negative eigenvalues of the lattice Dirac operator due to the breaking of...
Go to contribution page -
Ethan Neil29/07/2026, 09:40
We give an update on progress by the Fermilab Lattice, HPQCD, and MILC collaborations on computing isospin-breaking corrections for the hadronic vacuum polarization (HVP) contribution to the muon's anomalous magnetic moment. These effects, specifically electromagnetic corrections and strong-isospin breaking (SIB) corrections, are small but important to determine accurately for our sub-percent...
Go to contribution page -
Francesco Di Renzo29/07/2026, 09:40
Euclidean lattice correlators can be written as Laplace transforms of given spectral functions. Solving for the latter would thus simply amount to computing anti-transforms, which is unfortunately the prototype of an ill-posed problem. If one numerically approximates the integral transform via (e.g.) Gauss-Laguerre quadratures, the inverse problems is turned into a linear system, which is, not...
Go to contribution page -
Alex NieMiera (Michigan State University)29/07/2026, 10:00
In this work, we develop a unified machine learning strategy based on a variational autoencoder inverse mapper (VAIM) to explore the complementarity of the quasi-PDF and pseudo-PDF methodologies. VAIM is a conditional variational autoencoder–based framework that learns a low-dimensional latent representation of nonperturbative QCD information and constructs an inverse map from...
Go to contribution page -
Hersh Kumar (University of Maryland College Park)29/07/2026, 10:00Quantum computing and quantum informationContributed talk
Preparing low-energy states of lattice gauge theories (LGT) on quantum computers remains a central challenge. Standard approaches such as adiabatic evolution, variational algorithms, and eigenstate filtering are often limited by large circuit depths, closing gaps, costly classical optimization, or the need for high-overlap initial states. Dissipative state preparation offers an alternative...
Go to contribution page -
Dr Okuto Morikawa (RIKEN iTHEMS)29/07/2026, 10:00
We report a lattice study of the confinement vacuum of $SU(2)$ Yang--Mills theory at $\theta=2\pi$ using Wilson--'t~Hooft loop observables. Although Yang--Mills theories at $\theta$ and $\theta+2\pi$ are unitarily equivalent, recent developments in generalized global symmetries predict that the confining vacua at $\theta=0$ and $\theta=2\pi$ are distinguished as symmetry-protected topological...
Go to contribution page -
Oleksiy Bazavov (Michigan State University (US))29/07/2026, 10:00Hadronic and nuclear spectrum and interactionsContributed talk
The highly improved staggered quark action (HISQ) has been in use for about two decades now in calculations ranging from the hadronic contribution to the anomalous magnetic moment of the muon to QCD thermodynamics. Large data sets have been generated that allow for well-controlled chiral-continuum extrapolations. However, a class of problems that require some form of spectral reconstruction...
Go to contribution page -
Matthias Heinz29/07/2026, 10:00Hadronic and nuclear spectrum and interactions
Computations of nuclei starting from nuclear Hamiltonians have seen significant progress in the past two decades. Such calculations start from interactions from effective field theory. The Hamiltonians are then typically expanded in a harmonic oscillator basis and solved using systematically improvable many-body methods. Calculations on a discrete position-space lattice offer a promising...
Go to contribution page -
Jose Alejandro Vidal Maxia (University of Parma & INFN)29/07/2026, 10:00
We will discuss the analytical characterisation of the Laplace transform inversion problem turned into a finite-dimensional linear system. This is done via a Gauss-Laguerre quadrature rule and regularised by means of a Tikhonov prescription. This, in the light of solutions obtained by, e.g., M. Hansen, et al. & M. Saccardi et al. via the implementation of other methods/regulation prescriptions...
Go to contribution page -
Shaun Lahert29/07/2026, 10:00
Toward a complete sub-percent lattice determination of the muon g-2
We present an update on the Fermilab Lattice, HPQCD, and MILC collaboration's ongoing effort to compute the leading- and next-to-leading-order hadronic vacuum polarization (HVP) contributions to the muon anomalous magnetic moment. We report preliminary results for the long-distance disconnected and I=0 contributions...
Go to contribution page -
Akihiro Shibata (KEK)29/07/2026, 10:20
The dual superconductor picture is a promising mechanism for quark confinement, and magnetic monopoles play a dominant role in quark confinement. To understand the mechanism of quark confinement, we investigate the relation between the violation of the non-Abelian Bianchi identity (VNABI), the emergence of magnetic monopoles, and confinement by using the gauge-covariant decomposition and the...
Go to contribution page -
Joseph Karpie29/07/2026, 10:20
Femtography is the study of 3D femtometer scale images of the proton. Impact Parameter Distributions describe parton structure in terms of the parton's fraction of the total momenta and the location in the transverse plane. These images can be taken by Deeply Virtual Compton Scattering and other inclusive processes and give light on how mass, angular momentum, and mechanical properties are...
Go to contribution page -
Jun-Sik Yoo (Los Alamos National Laboratory)29/07/2026, 10:20Hadronic and nuclear spectrum and interactionsContributed talk
Results from ongoing calculations of the "nucleon charges" by the PNDME and NME collaboration are presented. These are based on preliminary data from O(7000) configurations on two physical pion mass ensembles with 2+1+1-flavor ensembles generated by the MILC collaboration at lattice spacing $a=0.087$ and $a=0.0576$ fm and 11 NME ensembles with 2+1-flavor clover action generated by...
Go to contribution page -
Benjamin Luke (Baylor University)29/07/2026, 10:20
Estimating the trace of the inverse of a large quark matrix is a longstanding problem in lattice QCD. Hutchinson's method is the standard for this calculation, which uses random noise vectors to achieve a desired tolerance. Doing so requires solving a system of linear equations $Ax = b$, where $b$ is the random noise vector. In this work, we introduce novel solving algorithms for use in...
Go to contribution page -
Tanmoy Bhattacharya (Los Alamos National Laboratory)29/07/2026, 10:20Quantum computing and quantum informationContributed talk
Quantum data learning (QDL) provides a framework for extracting physical insights directly from quantum states. In this presentation we develop QDL techniques for detecting the phase transition in the 2+1-dimensional toric-code loop-gas model in a magnetic field. Our unsupervised QDL approach recovers the phase structure and locates the phase transition with a small offset as expected in...
Go to contribution page -
Khai Phan (ETH Zurich)29/07/2026, 10:20
The hadronic light-by-light (HLbL) contribution is the second-largest source of theoretical uncertainty in the Standard Model prediction of the muon g-2. Within the RC programme, we are developing an independent HLbL calculation with C boundary conditions using openQxD, based on the two-current subtraction method proposed by Hayakawa, Blum, Izubuchi and Yamada in 2005. As a controlled proof...
Go to contribution page -
Wolfgang Söldner29/07/2026, 10:202Hadronic and nuclear spectrum and interactionsContributed talk
Within the RQCD collaboration, we are currently updating the determination of the gradient flow scale at the physical point using the $\Xi$ baryon mass as input. We utilize more than 50 CLS ensembles generated with non-perturbatively $O(a)$-improved Wilson dynamical fermions. These ensembles comprise six lattice spacings in the range of $a = 0.04-0.1$ fm, spatial volumes satisfying $L M_\pi >...
Go to contribution page -
David Ward (National Taiwan University)29/07/2026, 11:10Vacuum structure and confinement
Gauge theories with matter fields in the adjoint representation play an important role in the mechanisms of confinement due to an additional unbroken center symmetry. Assessment of the vacuum groundstate are, therefore, of primary interest in calculation of order parameters, monopole mass and center vortices. To this end, we present some results from an ongoing study of the adjoint SU(2)...
Go to contribution page -
Julian Mayer-Steudte29/07/2026, 11:10Hadronic and nuclear spectrum and interactionsContributed talk
In pNRQCD, the inclusive P-wave heavy quarkonium decay width into light hadrons factorizes at a scale $\Lambda$, and the non-perturbative contribution reduces to $\mathcal{E}_3$, an integral over the correlator of two electric fields connected by an adjoint Wilson line. This correlator is universal, independent of the specific initial state. In this work, we developed a new method that employs...
Go to contribution page -
Mattia Morgavi (Università degli Studi di Padova)29/07/2026, 11:10Quantum computing and quantum informationContributed talk
We introduce a method for the selective preparation and detection of quasiparticle wave packets, based on creation operators that generate dressed, localized excitations on top of interacting vacua of (quasi-)one-dimensional quantum lattice theories. This method exploits maximally localized Wannier functions (MLWFs) constructed from quasiparticle bands at intermediate system sizes, enabling...
Go to contribution page -
Raphael Lehner29/07/2026, 11:102Hadronic and nuclear spectrum and interactionsContributed talk
We investigate the determination of the $s$-wave scattering length in the $O(4)$ $\phi^4$ theory in the symmetry-broken phase. The theory is simulated on a four-dimensional lattice in the strong-coupling limit with a small external symmetry-breaking term. This model provides a controlled setting for testing methods used to extract low-energy scattering observables from lattice simulations.
Go to contribution page
We... -
Patrick Oare (Brookhaven National Laboratory)29/07/2026, 11:10
The Dirac operator is a fundamental object in lattice gauge theory. Its spectral properties carry direct physical significance: its low modes limit convergence in Krylov-based linear solvers, and real (zero) eigenvalues of the Wilson (overlap) Dirac operator correspond to topologically non-trivial field configurations. While the spectrum of Hermitian Dirac operators is real and easy to compute...
Go to contribution page -
Christian Zimmermann (University of Kentucky)29/07/2026, 11:10
The hadronic tensor is the central non-perturbative object in the calculation of the cross section of lepton-hadron interactions like neutrino-nucleon scattering. It is parameterized in terms of structure functions, which encode all necessary information independently of the kinematic region. We calculate correlation functions of two currents with Euclidean time separation using a clover...
Go to contribution page -
Dominik Erb29/07/2026, 11:10
We present our latest results on the isospin violating part of the HVP in the muon (g-2), including a chiral continuum extrapolation, where all relevant diagrams and the necessary counterterm enter. We use the covariant coordinate-space representation (CCS), and, following our recent work [2603.13086], we employ a factorization of the position space photon propagator for a suitable subset of...
Go to contribution page -
Mischa Batelaan (Adelaide University)29/07/2026, 11:30Hadronic and nuclear spectrum and interactionsContributed talk
We present a first-principles lattice QCD calculation of the radiative transitions of charmonium states to the light pseudoscalar mesons $\eta$ and $\eta'$. We extract the relevant transition form factors as a function of photon virtuality and connect the timelike region accessible through Dalitz decays to the real-photon point. A recurring challenge in these calculations is the appearance of...
Go to contribution page -
Rajnandini Mukherjee (University of Edinburgh)29/07/2026, 11:301Hadronic and nuclear spectrum and interactionsContributed talk
Understanding coupled-channel dynamics involving three or more particles remains a major challenge for computing hadronic scattering and decay processes on the lattice. We present a perturbative framework for describing such systems involving an arbitrary number of particles in a finite volume. Our method is valid at leading order in all $n\to m$ couplings of the theory, and incorporates the...
Go to contribution page -
Dario Panfalone29/07/2026, 11:30
We investigate the properties of the confining flux tube within the reconfined phase of trace-deformed $\mathrm{SU}(2)$ Yang-Mills theory in $(2+1)$ dimensions. Using lattice simulations performed above the standard deconfinement temperature, we analyze Polyakov-loop correlators to determine the ground-state energy of the effective string. Our numerical results indicate that the conventional...
Go to contribution page -
Sebastian Lahrtz (Johannes Gutenberg-University Mainz)29/07/2026, 11:30
Isospin-breaking corrections to the hadronic vacuum polarization contribution to the muon g-2 are one of the largest contribution to the error in the latest lattice calculations. To reach the precision of the direct measurement of the muon anomalous magnetic moment, it is therefore crucial to reduce the uncertainties contributing to the total error of hadronic vacuum polarization. I will...
Go to contribution page -
Jordan Mckee29/07/2026, 11:30
Precision determinations of $V_{ud}$ from superallowed nuclear β decays provide an important test of the Standard Model. A leading theoretical uncertainty arises from electroweak radiative corrections, in particular the contribution from the $\gamma W$ box diagram involving the interference between the electromagnetic and axial currents. The closely related $\gamma Z$ box contribution may be...
Go to contribution page -
Michael Hite (University of Arizona)29/07/2026, 11:30Quantum computing and quantum informationContributed talk
In classical simulations of quantum many body systems, entanglement has served as the traditional measure of "quantumness" or computational complexity. This was until the Gottesman-Knill theorem showed that a certain class of quantum states known as stabilizer states, which include some maximally entangled states, can be simulated classically with complexity linear in the number of qubits via...
Go to contribution page -
Chulwoo Jung29/07/2026, 11:30
Despite the intrinsic ambiguity in defining the topological index $Q$ on a discrete lattice, fermionic definitions based on either the Hermitian or non-Hermitian Wilson–Dirac operator yield an integer-valued topological index for any lattice QCD configuration. Here, we focus on configurations in which the topological index changes during the Hybrid Monte Carlo evolution, and investigate the...
Go to contribution page -
Ivan Mauricio Burbano Aldana (University of California, Berkeley and Lawrence Berkeley National Laboratory)29/07/2026, 11:50Quantum computing and quantum informationContributed talk
Real-Time Estimators for Scattering Observables (RESOs) is a proposal for the extraction of scattering amplitudes from simulations on quantum computers. Unlike the Lüscher family of methods on traditional Lattice QCD, RESOs shows that access to real-time correlators, increasingly achievable through quantum hardware, permits the study of general reactions without formal roadblocks associated to...
Go to contribution page -
Rocco Amorosso29/07/2026, 11:50
We study the vacuum-subtracted entanglement entropy of the color flux tube between a static quark-antiquark pair in SU(2) through SU(5) (2+1)-D pure gauge theory. Using the replica trick, we examine the dependence of entanglement on temperature as well as the size and topology of the entangling region. Through analyzing these factors, we present quantitative conclusions about the nature of...
Go to contribution page -
Maxim Mai (University of Bern)29/07/2026, 11:501Hadronic and nuclear spectrum and interactionsContributed talk
Since its derivation, the Finite-Volume Unitarity (FVU) 3-body quantization condition became a working horse studying various phenomenologically interesting systems from lattice. This includes pi(1300), omega(782) or a1(1260).
In my talk I will review new theoretical developments and updates in view of recent and anticipation of upcoming applications from lattice QCD.
Go to contribution page -
Vilija de Jonge (Institut für theoretische Physik an der Goethe Universität Frankfurt am Main)29/07/2026, 11:50Hadronic and nuclear spectrum and interactionsContributed talk
We present $\text{SU}(3)$ lattice gauge theory results for the $\mathcal{O}(1/m_Q)$ hybrid spin-dependent and hybrid–quarkonium mixing potentials. The only existing lattice computation of these potentials was exploratory and limited to quark–antiquark separations below approximately $0.5\,\mathrm{fm}$. We extend the lattice determination beyond $1\,\mathrm{fm}$ using large-volume,...
Go to contribution page -
choi minjae29/07/2026, 11:50
The low-lying modes of the Wilson Dirac operator are key ingredients in deflation and multigrid algorithms for lattice QCD, where they define the near-null spaces responsible for critical slowing down. In this talk, we present a method for learning such low modes with a gauge-equivariant neural network trained on an ensemble of gauge configurations, using a Rayleigh–Ritz loss that minimizes...
Go to contribution page -
Yong Zhao29/07/2026, 11:50
We present lattice QCD calculations of the proton isovector quark helicity parton distribution function (PDF) within the Large Momentum Effective Theory (LaMET) framework, together with the first determination of the twist-3 moment $\tilde{d}_2$ from the operator product expansion of nonlocal matrix elements. The helicity PDF is calculated using both gauge-invariant (GI) and Coulomb-gauge (CG)...
Go to contribution page -
David Albandea (Helmholtz-Institut Mainz, GSI)29/07/2026, 11:50
The inclusion of isospin-breaking contributions is mandatory for achieving sub-percent precision in determinations of the hadronic vacuum polarization (HVP) and demands efficient computational strategies. In this talk, I compare two approaches: explicit $N_f = 1+1+1$ simulations with non-degenerate up and down quark masses, and the RM123 perturbative expansion in the quark mass splitting...
Go to contribution page -
Haobo Yan (Peking University)29/07/2026, 12:103Hadronic and nuclear spectrum and interactionsContributed talk
Understanding hadron interactions from QCD is key to mapping out the resonance spectrum of the strong interaction. In recent years, lattice QCD has made significant progress in treating both two- and three-body scattering, but a description of coupled systems involving both remains lacking.
In this talk, we present a study of the isoscalar vector sector in a coupled two- and three-body...
Go to contribution page -
Felipe Ortega Gama (UC Berkeley)29/07/2026, 12:102Hadronic and nuclear spectrum and interactionsContributed talk
We extract the elastic electromagnetic transition of a two-pion $I=2$ state across the two-pion elastic energy region using lattice QCD. In particular, we determine the energy dependence of a two-particle transition from lattice QCD for the first time. The finite-volume spectrum and elastic matrix elements were calculated on a lattice with $m_\pi\approx 400$ MeV. Infinite-volume amplitudes...
Go to contribution page -
marco garofalo (University of Bonn, HISKP)29/07/2026, 12:10
We calculate the hadronic vacuum polarization (HVP) contribution to the muon's anomalous magnetic moment using isospin-symmetric lattice QCD. The calculation is based on gauge configurations generated by the Extended Twisted Mass Collaboration (ETMC) with $N_f = 2 + 1 + 1$ flavors of Wilson-clover twisted-mass quarks, employing four lattice spacings between $0.045$ and $0.08\text{ fm}$ and...
Go to contribution page -
Dr Claudio Bonanno (ITP, University of Bern)29/07/2026, 12:10
We present a lattice determination of the I = 2 pion scattering length in the large-$N$ limit. This calculation is based on the twisted Eguchi-Kawai formulation of large-$N$ QCD, and employs values of $N$ ranging from 289 up to 1156. Our findings will be compared with Chiral Perturbation Theory predictions and with previous large-$N$ lattice results obtained with standard methods and...
Go to contribution page -
Prof. Kehfei Liu (Lawrence Berkeley National Lab)29/07/2026, 12:10
It has been taken for granted in lattice formulation that, due to translational invariance, it is not feasible to have a reference point to define the spatial densities of local operators in a hadron. We shall show that, using Ward identity, one can find the positions of valence quarks so that the spatial densities can be defined and calculated. This bypasses the usual practice of obtaining...
Go to contribution page -
Chung-Chun Hsieh (University of Maryland, College Park)29/07/2026, 12:10Quantum computing and quantum informationContributed talk
Hadronic tensors encode non-perturbative information about hadron structure and scattering dynamics. Quantum computing offers a complementary first-principles approach to kinematic regimes challenging for classical algorithms. As a proof-of-concept study, we investigate the scalar-current hadronic tensor in a deep-inelastic scattering in the Schwinger model. We evaluate the corresponding...
Go to contribution page -
Ho Hsiao (Center for Computational Sciences, University of Tsukuba)29/07/2026, 12:10
Machine learning offers an alternative to conventional iterative algorithms for lattice gauge fixing, with the potential to reduce computational cost for large lattice volumes. Building upon our previous work, we perform a systematic scan of convolutional neural network architectures for lattice gauge fixing, in which the gauge transformation matrices are constructed from Wilson lines with...
Go to contribution page -
Dr M. Padmanath (The Institute of Mathematical Sciences Chennai)30/07/2026, 09:00
I shall present a review of recent developments in meson-meson and meson-baryon spectroscopy from lattice QCD, with particular attention to studies of exotic hadron candidates involving heavy quarks. Due emphasis shall be laid on the experimental and phenomenological significance of these investigations, with a view to bringing out the emerging consensus, the outstanding open questions, and...
Go to contribution page -
Robert Perry (Massachusetts Institute of Technology)30/07/2026, 09:30
Lattice quantum chromodynamics (LQCD) offers the tantalizing prospect of grounding nuclear physics in the fundamental theory of the strong force. Besides the importance of these calculations to reveal the emergence of nuclear complexity from the Standard Model, current theoretical modelling of nuclear targets used in experimental searches for physics beyond the Standard Model often lead to...
Go to contribution page -
Alaina Green (Joint Quantum Institute / U. Maryland)30/07/2026, 10:00
Quantum simulation is widely considered to be the most promising application of quantum computers. Already, robust experiment-theory collaborations targeting lattice field theory simulations have pushed the limitations of ever-improving quantum hardware, establishing performance benchmarks [1], providing an arena for quantum co-design [2], and motivating hardware innovation [3,4]. This talk...
Go to contribution page -
Christian Walter Bauer (Lawrence Berkeley National Lab. (US))30/07/2026, 11:00
-
Prof. Zohreh Davoudi (University of Maryland)30/07/2026, 11:45
-
Clement Charles (University of Maryland)30/07/2026, 14:00Hadronic and nuclear spectrum and interactionsContributed talk
We present a systematic study of the finite-volume spectrum of isospin-zero two-pion scattering using lattice QCD with physical quark masses and G-parity boundary conditions. This is a reanalysis of the data used for the 2020 RBC&UKQCD calculation of $\epsilon’$. Our main focus is the extraction of the ground-state energy, which is critical for computing the $I=0$ $K \to \pi \pi$ decay...
Go to contribution page -
Luka Leskovec (Jozef Stefan Institute & Faculty of Mathematics and Physics, University of Ljubljana)30/07/2026, 14:00
We compare multi-hadron and single-hadron treatments of $B\to\rho\ell\bar{\nu}$ in lattice QCD using one $N_f=2+1$ clover-Wilson ensemble with $m_\pi \approx 320$ MeV, where the $\rho$ has a decay width of approximately $40$ MeV. In the multi-hadron analysis, the unstable $\rho$ is treated as an interacting $I=1$, $P$-wave $\pi\pi$ final state with the full use of the finite-volume formalism....
Go to contribution page -
Constantia Alexandrou30/07/2026, 14:00
We determine the complete spin and momentum fraction decomposition of the nucleon at the continuum limit and compare with phenomenological analyses.
Go to contribution page
The computation is done using four twisted mass ensembles with different lattice spacings and physical pion mass.
The renormalization functions are computed fully non-perturbatively including the mixing between the singlet quark and gluon... -
Daniel Unterhuber (University of Graz)30/07/2026, 14:00
This talk presents the results of lattice simulations of quantum chromodynamics (QCD) above the crossover temperature and at unprecedentedly high baryon densities. Lattice QCD calculations at finite chemical potential suffer from the sign problem, which prevents the use of conventional importance-sampling methods such as the Hybrid Monte Carlo algorithm. In this study, the Complex Langevin...
Go to contribution page -
Andrea Bulgarelli (University of Bonn)30/07/2026, 14:005Quantum computing and quantum informationContributed talk
Simulations of quantum many-body systems based on the Hamiltonian formulation are emerging as a new tool to study phenomena inaccessible with traditional methods. A significant challenge is encoding physical systems in the Hamiltonian formulation, particularly achieving a finite Hilbert space which still accommodates the relevant physics. It has been shown that fuzzy regularization allows one...
Go to contribution page -
Renzo Kapust (Universität Heidelberg)30/07/2026, 14:00
In this talk we present a novel generative architecture for systems with complex probability distributions. In general, these sampling tasks come with two challenges: resolving sign problems and efficient sampling. The architecture is based on physics-informed kernels (PIKs) introduced in arXiv:2510.26678, and aims at resolving both challenges. Key to the complex PIK-architecture is its...
Go to contribution page -
Gota Tanaka (Meiji Gakuin University)30/07/2026, 14:00Theoretical developments and applications beyond the Standard ModelContributed talk
Entanglement negativity is a measure of quantum entanglement and defined as the trace norm of the partially transposed density matrix. One of the important properties of entanglement negativity is that it can be used to quantify the amount of entanglement in mixed states. We represent the density matrix of a 1D quantum system as a 2D tensor network and calculate the entanglement negativity...
Go to contribution page -
Junya Tokoro (The University of Osaka)30/07/2026, 14:20
We report on our on-going study of the $B_s \to K\ell\nu$ semileptonic decays in $N_f = 2 + 1$ lattice QCD. Our simulations are carried out at a lattice cut-off $a^{-1} \sim 2.5$ GeV and a pion mass $M_\pi \sim 500$ MeV. The Mobius domain-wall action is employed for all quark flavors with bottom quark masses up to $m_b < 0.7 a^{-1}$ to control discretization errors. We present our preliminary...
Go to contribution page -
Shinji Ejiri (Niigata University)30/07/2026, 14:20
We investigate the phase structure and equations of state in lattice gauge theory at finite temperature and finite density, focusing on the canonical partition function obtained by expanding the grand partition function in terms of particle number. We demonstrate that when quark masses are heavy and the hopping parameter expansion of the quark determinant is applicable, the complex phase of...
Go to contribution page -
Andrew Jackura (William & Mary)30/07/2026, 14:20Hadronic and nuclear spectrum and interactions
I will present a first-principles calculation within Quantum ChromoDynamics (QCD) of strongly coupled isotensor three-pion scattering amplitudes with resonating sub-channel $\rho$ mesons. Computations within lattice QCD allow for a systematic determination of the spectrum of three pions in a finite-volume. Using generalizations of the L\”uscher framework, we map the spectrum to infinite-volume...
Go to contribution page -
Fernando Romero López (Uni Bern)30/07/2026, 14:20
The generating functional in quantum field theory provides the natural framework for constructing correlation functions as derivatives with respect to source operators. In this talk, I will present a methodology that leverages machine-learned normalizing flows to reduce the variance of arbitrary N-point correlation functions of bosonic operators in lattice gauge theory calculations by encoding...
Go to contribution page -
Takahiro Hayazaki (Kanazawa University)30/07/2026, 14:201Theoretical developments and applications beyond the Standard ModelContributed talk
Entanglement entropy (EE) is a measure of quantum entanglement and provides a powerful probe of critical behavior. In particular, an effective central charge can be extracted from the EE and is expected to provide valuable information about criticality. We compute the EE in the (1+1)-dimensional real scalar $\phi^4$ theory using the higher-order tensor renormalization group (HOTRG) method. We...
Go to contribution page -
Masato Nagatsuka (Tohoku University)30/07/2026, 14:20
This study uses the third PACS10 gauge ensemble generated by the PACS Collaboration, providing a large physical volume exceeding $(10\,\mathrm{fm})^4$. This large volume is highly advantageous for determining detailed form factors in the small-$q^2$ region, where the root-mean-square radius, i.e., the axial radius, can be more precisely evaluated. The resulting nucleon axial-vector form factor...
Go to contribution page -
Shoto Aoki (RIKEN iTHEMS)30/07/2026, 14:20Quantum computing and quantum informationContributed talk
We study the lattice Hamiltonian formulation of quantum electrodynamics with staggered fermions and extend the mass-shift construction developed for the Schwinger model to the $(3+1)$-dimensional case. In the Schwinger model, the chiral transformation is realized as a one-site translation of the staggered fermion field. By introducing a correction term, referred to as the mass shift, the...
Go to contribution page -
Marco Aliberti (University of Parma & INFN)30/07/2026, 14:40
The sign problem interdicts lattice simulations at real non-zero values of the chemical potential: the computation of observables at imaginary values is a popular way out, but to make predictions for QCD at finite density one is left with the problem of the analytic continuation to the real axis, given a discrete set of measurements on the imaginary one. The Parma group has developed a method...
Go to contribution page -
Elia Cellini (University of Edinburgh)30/07/2026, 14:40
In recent years, the combination of neural network architectures and out-of-equilibrium methods has emerged as a powerful framework to build a new generation of numerical algorithms in various scientific fields. In lattice field theory, a prominent example is Stochastic Normalizing Flows, which have been used to tackle topological freezing in $\textrm{SU}(3) $ gauge theory. In this talk, we...
Go to contribution page -
Sungwoo Park (Sejong University)30/07/2026, 14:40
Results from ongoing calculations of the nucleon isovector electromagnetic form factors by the PNDME collaboration are presented. These are based on data from $\mathcal{O}(7000)$ configurations on two physical pion mass ensembles with $2+1+1$-flavor HISQ generated by the MILC collaboration at lattice spacings $a=0.087$ and $a=0.0576$ fm. We will discuss the extraction of the electric and...
Go to contribution page -
Hayato Aizawa (University of Tsukuba)30/07/2026, 14:40Theoretical developments and applications beyond the Standard ModelContributed talk
The step-scaling function (SSF) is a non-perturbative tool to determine the running coupling in lattice gauge theory.
Go to contribution page
The tensor renormalization group (TRG), which is free from the sign problem, allows us calculate the SSF in the CP(1) model with a $\theta$ term. We first study the $\theta = 0$ case to validate the calculation of the SSF with the TRG method comparing our results with the... -
Alessio Negro (University of Bonn, HISKP)30/07/2026, 14:40Quantum computing and quantum informationContributed talk
We study confining flux tubes in compact U(1) gauge theory in (2+1) dimensions using matrix product states and a recently introduced plaquette basis for the dual Hamiltonian. For open strings between static charges, we compute both the static potential and the transverse flux-tube profile and compare them with effective string theory predictions. We also determine the potential of closed...
Go to contribution page -
Jacob Sitison (University of Colorado Boulder)30/07/2026, 14:40Hadronic and nuclear spectrum and interactionsContributed talk
In this talk, we present two and three pion scattering using finite volume spectra from lattice QCD. We discuss three-pion scattering in both the maximal isospin and isotensor channels, the latter of which exhibits a $\rho$ resonant subsystem. The different three-pion channels rely on knowledge of the same two-pion subchannels with $I_{2\pi}=2,1$. We explore the importance of simultaneous fits...
Go to contribution page -
Antonino D'anna (INSTITUTO DE FISICA TEORICA, UAM-CSIC)30/07/2026, 14:40
We present an update on our determination of the $B_s \to K$ and $B \to \pi$ semileptonic decay form factors. The ALPHA Collaboration aims to compute these form factors by interpolating continuum-limit observables in $1/m_h$, constructed so that the matching and renormalisation cancel. Relativistic continuum data at and above the charm mass are interpolated with their static-limit...
Go to contribution page -
Nicholas Cassar (Colorado State University)30/07/2026, 15:00
We present an update on our calculation of form factors for the decay $B\to \pi \ell \nu$ from lattice QCD using Highly Improved Staggered Quarks. The calculation is performed using the MILC collaboration's $n_f = 2+1+1$ HISQ gauge-field ensembles with the same HISQ action used for both the valence and sea quarks. We use nine ensembles with lattice spacings ranging from 0.09 fm down to 0.03...
Go to contribution page -
Piyush Kumar (Bergische Universität Wuppertal)30/07/2026, 15:00
Contour-based extrapolation of thermodynamic observables to finite chemical potential is known to overcome the shortcomings of Taylor series extrapolation and to extend the reach in the finite density region. Two such schemes are the T-prime expansion, which uses contours of constant baryon density, and a recently proposed scheme using contours of constant entropy. However, a detailed...
Go to contribution page -
Prof. Sergey Syritsyn (Stony Brook University)30/07/2026, 15:00
Proton and neutron electric and magnetic form factors are the primary characteristics of their spatial structure and have been studied extensively over the past half-century. At large values of the momentum transfer $Q^2$ they should reveal transition from nonperturbative to perturbative QCD dynamics and effects of quark orbital angular momenta and diquark correlations. Currently, these form...
Go to contribution page -
Christopher Kane (University of Maryland)30/07/2026, 15:001Quantum computing and quantum informationContributed talk
Taking the continuum limit is essential for extracting physical observables from quantum simulations of lattice gauge theories. Achieving this limit requires careful control of all systematic uncertainties, including those from approximate time evolution. Existing methods for product formulas rely on complicated renormalization trajectories because of the dependence on both the lattice spacing...
Go to contribution page -
Nicholas Chambers (William & Mary)30/07/2026, 15:00Hadronic and nuclear spectrum and interactionsContributed talk
Three-body dynamics play an important role within the hadron spectrum, from familiar resonances like the omega meson to more exotic states such as the recently-discovered T_{cc} tetraquark candidate. The complete Lüscher workflow has been formalized for a growing number of three-hadron systems, and lattice QCD calculations of these systems are underway. Given a set of lattice-determined...
Go to contribution page -
Yuto Sugimoto (Tohoku University)30/07/2026, 15:00Theoretical developments and applications beyond the Standard ModelContributed talk
We investigate the phase structure of two- and three-color QCD in the strong coupling limit using the tensor renormalization group method. By analytically integrating out the gauge fields, the partition function can be represented as a Grassmann tensor network. Applying the tensor renormalization group method to the network allows us to directly calculate partition functions in the cold and...
Go to contribution page -
Octavio Vega (University of Illinois Urbana-Champaign)30/07/2026, 15:00
Sampling with flows and diffusion models has emerged as a promising alternative to MCMC in lattice field theory. A central obstacle to their practical adoption is the degradation of sample quality as the lattice volume grows, and identifying a scalable prescription for applying deep generative models to the lattice setting is still an open problem. We adapt and extend a framework based on...
Go to contribution page -
Emmanuel Ortiz Pacheco (Eötvös Loránd University)30/07/2026, 15:20
We investigate contour deformation strategies for alleviating the finite-density sign problem in the heavy-dense limit of QCD in two, three, and four dimensions. To reduce the number of integration variables, we work in Polyakov gauge and consider complex deformations of the Polyakov loop eigenvalues. We study approaches based on holomorphic flow equations as well as numerical optimization,...
Go to contribution page -
Blake Senseman (University of Iowa)30/07/2026, 15:20Quantum computing and quantum informationContributed talk
While real-time simulation of Quantum Chromodynamics remains technologically out of reach, simplified models for studying elements of QCD phenomenology abound. This work aims to add a spin-1 truncation of 1+1D scalar electrodynamics represented on a chain of qutrit sites to the collection of models considered to demonstrate confinement and string breaking accessible to current simulation...
Go to contribution page -
Joshua Crawford (University of Wuppertal)30/07/2026, 15:20
The calculation and analysis of nucleon correlation functions is essential for understanding the observed spectra and structure of these ubiquitous hadrons. Two challenges arise in their analysis: at early Euclidean times, they are dominated by excited state contributions, and at later Euclidean times, the signal-to-noise ratio is too great to extract meaningful physics. This leads to a common...
Go to contribution page -
Shinichiro Akiyama (University of Tsukuba)30/07/2026, 15:20Theoretical developments and applications beyond the Standard Model
We investigate the phase structure of the (1+1)-dimensional single-flavor Gross–Neveu model with Wilson fermions using the Grassmann corner transfer matrix renormalization group (CTMRG). The path integral is formulated as a two-dimensional Grassmann tensor network and approximately contracted by the Grassmann CTMRG algorithm. We investigate the phase diagram by varying the fermion mass and the...
Go to contribution page -
Prof. Stefan Meinel (University of Arizona)30/07/2026, 15:20
I will present a lattice calculation of $\Xi_b \to \Xi$ form factors with application to rare decays, and give an update on my progress toward improved determinations of the $\Lambda_b \to p$, $\Lambda_b \to \Lambda$, and $\Lambda_b \to \Lambda_c$ form factors. An important methodological advance is the use of modified $z$ expansions that include dispersive bounds and asymptotic-behavior...
Go to contribution page -
Letizia Parato (University of Colorado - Boulder)30/07/2026, 15:20
Critical slowing down remains a major challenge for lattice simulations near continuous phase transitions, where the correlation length diverges. One possible strategy to address this issue is to generate large-volume configurations from smaller lattices, where local update algorithms remain efficient. In this setting, the renormalization group provides a natural framework: the coarse...
Go to contribution page -
Dr Adeilton Dean Marques Valois (University of Granada)30/07/2026, 15:20Hadronic and nuclear spectrum and interactionsContributed talk
Staggered fermions comprise an important theoretical framework in modern lattice QCD calculations due to their low computational cost. However, the theory manifests highly non-trivial lattice artifacts that complicate the extraction of scattering amplitudes from finite-volume energies using the Lüscher formalism. At non-zero lattice spacing, the meson sector of the theory contains multiple...
Go to contribution page -
Simone Romiti30/07/2026, 16:10
The Hamiltonian formulation of lattice gauge theories solves several of the problems in Euclidean Monte Carlo simulations. However, the main obstacle is the exponential growth of the Hilbert space with the lattice volume, and one needs to find an effective representation that fits the computer memory. Most of the present calculations rely on explicit truncation methods, usually suited only for...
Go to contribution page -
Fabian Zierler (Technical University of Munich)30/07/2026, 16:10Hadronic and nuclear spectrum and interactionsContributed talk
Diquarks are colour-nonsinglet objects that have gained interest in the study of baryons, tetraquarks and other exotics. A gauge invariant way of measuring diquark properties is obtained by contracting all colour indices with static colour sources. We extend this approach from baryons to tetraquarks with two static and two light quarks, which allows directly probing diquarks in higher colour...
Go to contribution page -
Paulo Silva30/07/2026, 16:10
The lattice gluon propagator at finite temperature is computed in the recently introduced center-symmetric Landau gauge in pure Yang-Mills theory. Recent works in the continuum, e.g. [1] show that the gluon propagator is degenerate along the diagonal color directions in the confining phase, and becomes nondegenerate in the deconfined phase. This result allows to use the gluon propagator to...
Go to contribution page -
Dr Gregoris Spanoudes (University of Cyprus)30/07/2026, 16:10
We study the renormalization of $\Delta F=1$ four-quark operators in a gauge-invariant renormalization scheme (GIRS). We begin by classifying a complete basis of scalar and pseudoscalar four-quark operators into irreducible representations of the flavor symmetry group and analysing their symmetry properties and mixing patterns. We then consider all classes of $\Delta F=1$ operators, including...
Go to contribution page -
Lorenzo Barca (DESY)30/07/2026, 16:10
Nucleon sigma terms are important for the decomposition of the nucleon mass and for searches for new physics beyond the Standard Model involving scalar interactions. A persistent tension between lattice QCD and phenomenological determinations may be due to uncontrolled excited-state contamination in lattice QCD analyses. In previous work at $m_\pi=429$ MeV, we showed that this contamination is...
Go to contribution page -
Gwen Hartshaw (Syracuse University)30/07/2026, 16:101Theoretical developments and applications beyond the Standard ModelContributed talk
We conduct numerical simulations to map out the phase diagram and critical behavior of a lattice Higgs model composed of a massless staggered fermion transforming in the fundamental representation of $SU(2)$ and coupled to a scalar field in the adjoint representation of the group. The scalar action consists of quadratic, quartic terms and a derivative term. At fixed quartic coupling we explore...
Go to contribution page -
Lena Funcke (University of Bonn)30/07/2026, 16:10Quantum computing and quantum informationContributed talk
We present a numerical study of the topological $\theta$-term in (3+1)D pure SU(2) Yang-Mills theory in a sign-problem-free Hamiltonian lattice formulation, using exact diagonalization on a single periodic cube and minimal field truncation. In the strong-coupling regime, we uncover distinct $\theta$-dependent phases, signaled by peaks in the topological susceptibility, and sharp variations in...
Go to contribution page -
Emil Otis Rosanowski30/07/2026, 16:30Quantum computing and quantum information
While Monte-Carlo-based simulations of lattice gauge theories have been remarkably successful across a wide range of applications, they typically break down in physical settings afflicted by the sign problem. One possible path for circumventing the sign problem is quantum simulation, which have shown substantial progress in the last years in simulating $(1+1)$- and $(2+1)$-dimensional...
Go to contribution page -
Ryan Kellermann (High Energy Accelerator Research Organization (KEK))30/07/2026, 16:30
We report on recent progress in the calculation of inclusive semileptonic decay rates for $D_s$ mesons from lattice QCD. In this talk, we present results on the continuum and chiral extrapolations performed using gauge ensembles generated with 2+1 flavors of Möbius domain-wall fermions. We obtain results that are in agreement with currently available experimental data, with an error at the...
Go to contribution page -
Pia Leonie Jones Petrak (JLab)30/07/2026, 16:30
Sigma terms are of fundamental interest as measures of the quark mass contributions to the mass of a given baryon. As the key input for neutrino and nucleon cross-sections, the nucleon sigma terms are relevant for dark matter predictions. Further, for the nucleon-pion sigma a long standing discrepancy between Lattice QCD and phenomenology persists. By performing a direct determination of the...
Go to contribution page -
Suryansh Rajawat (University of Maryland)30/07/2026, 16:30
We present a variational approach to quantum field theory based on wavefunctions parameterized by neural networks, as a stepping stone towards real-time and finite-density regimes, inaccessible to path-integral Monte Carlo. Working in the Hamiltonian formulation on a spatial lattice, we optimize a neural-network ansatz with variational Monte Carlo to obtain the ground-state and excited-state...
Go to contribution page -
Eduardo Garnacho-Velasco (Eotvos Lorand University)30/07/2026, 16:30
QED corrections to observables in QCD are by now well-understood at zero temperature, where QED effects are perturbative and are required for precision physics observables, such as the neutron-proton mass difference or the muon g-2, among many others. However, there are indications that at finite temperature the introduction of QED can lead to non-perturbative effects, affecting the structure...
Go to contribution page -
Marina Krstic Marinkovic (ETH Zurich)30/07/2026, 16:302Theoretical developments and applications beyond the Standard ModelContributed talk
Symmetric mass generation denotes an unconventional continuum QFT mechanism, in which fermions acquire mass without a fermion bilinear condensate, i.e., without spontaneous symmetry breaking. The symmetric mass generation (SMG) mechanism can be studied in a Euclidean lattice model with two flavors of massless staggered fermions and two independent four-fermion interactions. In this talk, I...
Go to contribution page -
Stephen Sharpe (University of Washington)30/07/2026, 16:30Hadronic and nuclear spectrum and interactionsContributed talk
I present an update on our ongoing study of the $T_{cc}^+$, based on two CLS ensembles (X252 and X253) for which $M_\pi\approx 280\,$MeV. We have determined the spectra for $DD\pi$ ($I=0$), as well as the subchannels $DD$ ($I=1$) and $D\pi$ ($I=1/2$), using a range of operators in several frames and irreps. We fit these using a combination of two- and three-particle quantization conditions,...
Go to contribution page -
Joshua Lin (Argonne National Laboratory)30/07/2026, 16:50
In the Euclidean path-integral formalism, the theta-term introduces a sign problem which makes direct investigation difficult. On the other hand, the theta-term can be included in a Hamiltonian formulation straightforwardly - as long as one can deal with the infinite dimensional Hilbert space. In this contribution we present an investigation into the 3+1d SU(3) Yang Mills action with nonzero...
Go to contribution page -
Rohith Karur (The University of California, Berkeley)30/07/2026, 16:50
Nucleon sigma terms quantify the contributions of scalar quark condensates towards the nucleon's mass. Aside from understanding the origins of the various components of the nucleon's mass, these scalar matrix elements strongly affect the magnitude of certain dark matter (WIMP) - nucleon scattering cross sections. Their precise theoretical determination could thus offer input into the...
Go to contribution page -
Thea Budde (ETH Zürich)30/07/2026, 16:50Theoretical developments and applications beyond the Standard ModelContributed talk
Non-integrable quantum many-body systems are generally expected to thermalize. That is, local observables relax to values predicted by a thermal ensemble constrained by the conserved quantities. However, in recent years, a growing number of exceptions have been identified, including many lattice Hamiltonians with gauge symmetry. In this talk, based on arXiv:2604.15820, I will outline how...
Go to contribution page -
Andres Stump (Humboldt-Universität zu Berlin)30/07/2026, 16:50Hadronic and nuclear spectrum and interactionsContributed talk
The doubly bottom tetraquark $T_{bb}$, with $I(J^P) = 0(1^+)$, is widely expected to be a deeply bound exotic state. In contrast, much less is known about $BB^*$ scattering near and above threshold. Studying this system is challenging: one must separate the deeply bound $T_{bb}$ from the $B^{(*)}B^*$ scattering states by using both local tetraquark operators and bilocal scattering operators....
Go to contribution page -
Mr Gergely Marko (Eotvos Lorand University, Institute of Physics)30/07/2026, 16:50
At large isospin chemical potential $\mu_I$ and low temperature, QCD undergoes a second-order transition to a Bose-Einstein condensate of charged pions, whose order is encoded in the non-analytic $\mu_I$-dependence of the pressure and of the isospin density derived from it. Including dynamical photons is expected, on general grounds, to drive this transition first order. Since unequal quark...
Go to contribution page -
Navdeep Singh Dhindsa (TIFR Mumbai)30/07/2026, 16:50
We present a lattice QCD study of heavy-heavy meson decay constants using HISQ gauge ensemble generated by the MILC Collaboration. Employing the HISQ action for both charm and bottom valence quarks tuned to their physical masses, we determine pseudoscalar, vector, and tensor decay constants for heavy quarkonium and $B_c$ systems. Preliminary results are presented for the decay constants of the...
Go to contribution page -
Sriram Bharadwaj (University of California, Los Angeles (UCLA))30/07/2026, 16:50
We present results on quantum simulations of topological phases in $(2+1)$D lattice QED with one and two fermion flavors, at both zero and finite density. Establishing that staggered fermions fail to host infrared topological phases, we show that Wilson fermions give rise to Chern-Simons physics in the infrared, reflecting consistency with both the lattice Lagrangian and the continuum...
Go to contribution page -
Akhil Chauhan (University of Illinois Urbana Champaign)30/07/2026, 17:10
We present a calculation of the form factors for $B_{(s)} \to D_{(s)} \ell \nu$ decay using the highly improved staggered quark action for both valence and sea quarks on the MILC collaboration’s $2+1+1$-flavor ensembles. We use 9 ensembles with lattice spacings ranging from 0.09fm to 0.03fm, 3 of which have physical pion masses. On our finest ensembles, we compute the form factors directly at...
Go to contribution page -
Etsuko Itou30/07/2026, 17:10
We investigate the chemical-potential dependence of hadron masses in two-color QCD (QC$_2$D) using first-principles lattice simulations. QC$_2$D provides a useful theoretical laboratory for studying cold dense QCD matter, since it is free from the sign problem while sharing several important nonperturbative features with three-color QCD. In this work, we compute two-point correlation functions...
Go to contribution page -
Zane Ozzello30/07/2026, 17:10Quantum computing and quantum informationContributed talk
In the current landscape of quantum computation, estimating necessary shot totals for desired accuracy is a preeminent question. Here, we introduce the usage of cumulative probability distributions: sums of total probability up to a capped value, working through the entire probability spectrum. These cumulative distributions of Rydberg atom arrays are approximated well by Fermi...
Go to contribution page -
Finn Temmen (Forschungszentrum Jülich, IAS-4)30/07/2026, 17:101Theoretical developments and applications beyond the Standard ModelContributed talk
The Hubbard model offers a powerful minimal description of molecules and materials, yet it neglects several effects and interactions observed in nature that give rise to a much richer variety of physics. For instance, extending the on-site interaction to include nonlocal interactions gives rise to a competition between strongly correlated phases, while incorporating spin-orbit coupling can...
Go to contribution page -
Christian Schneider (University of Cyprus)30/07/2026, 17:10
The inclusion of isospin-breaking corrections arising from electromagnetic interactions and the up–down quark mass difference has become timely in modern lattice QCD calculations, as the precision of many observables has reached the percent level. In this context, the RM123 method has played a pivotal role in recent years. In this work, we apply this framework to the study of baryon mass...
Go to contribution page -
Sipaz Sharma (Technical University Munich)30/07/2026, 17:10Hadronic and nuclear spectrum and interactionsContributed talk
We study the $Z_b$ tetraquark channel, $\bar{b}b\bar{d}u$, with quantum numbers $J^{PC}=1^{+-}$. Our approach involves calculating correlators among three operator classes: (i) static-light meson pair, (ii) quarkonium plus pion, and (iii) the novel interpolator based on BOEFT (Born–Oppenheimer Effective Field Theory) proposed in Ref. [1]. We use the GEVP variational approach to extract the...
Go to contribution page -
Rohan Misra (Boston University)30/07/2026, 17:10
Placing lattice field theories on curved spacetimes requires more than a choice of triangulation: the UV couplings must encode the real-space geometry seen by long-distance observables. Motivated by Brower and Owen's solution for the 2D Ising model on a latticized two-sphere [
Go to contribution pagearXiv:2407.00459], the affine-plane Ising construction [arXiv:2209.15546] and the affine conjecture... -
Erez Zohar (Tel Aviv University)31/07/2026, 09:00
Tensor network states are powerpful variational guess states rooted in quantum information theory, which take into account the expected entanglement structure (area law) of physically relevant states and therefore significantly reduce the complexity of searching for them. I will give a brief introduction to these states and their special properties, and focus on their application for the study...
Go to contribution page -
Hersh Singh (Fermilab)31/07/2026, 09:30
A nonperturbative definition of chiral gauge theories remains a long-standing open problem. Hamiltonian formulations, motivated in part by quantum simulation and tensor-network methods, offer a fresh perspective on old questions: fermion doubling and the fate of the Nielsen–Ninomiya theorem. Drawing on recent advances in our understanding of anomalies on the lattice, I will survey these...
Go to contribution page -
Prof. Christine Aidala31/07/2026, 10:00
The future Electron-Ion Collider (EIC) will be the next-generation facility focused on QCD research, bringing the age of quantitative QCD to maturity. Lattice QCD research will continue to play an important role in setting the stage for the EIC in the upcoming decade, as both the precision of lattice calculations keeps improving and the types of quantities and observables that can be...
Go to contribution page -
Gunnar Bali (Universität Regensburg)31/07/2026, 11:00
Almost all the known mass of the universe can be attributed to nucleons. Accurate knowledge of the nucleon structure in terms of the quark and gluon degrees of freedom is essential for precisely extracting standard model parameters, including those in the neutrino sector. This knowledge is also crucial for our eventual discovery of physics beyond the standard model in colliders, fixed target...
Go to contribution page -
Andreas Kronfeld (Fermi National Accelerator Lab. (US))31/07/2026, 11:45
-
Erik Lundstrum (Columbia University)31/07/2026, 14:00
We recently completed a one-loop calculation of the RI/SMOM to $\overline{\text{MS}}$ renormalization scheme conversion factors for the $\Delta S = 1$ four-quark operators with four active quark flavors entirely by prompting an agentic AI system to generate Mathematica code. These are required perturbative inputs for lattice QCD simulations of weak processes such as the RBC/UKQCD calculation...
Go to contribution page -
Prof. Seyong Kim (Sejong University)31/07/2026, 14:00
We study bottomonium and B mesons at non-zero temperature, using lattice NRQCD for bottom quarks and an ${\cal O} (a)$ improved Wilson action for $N_f = 2+1$ flavors of light quarks on anisotropic lattices. We consider two sets of FASTSUM ensembles, with an anisotropy of $\xi = 3.45$ for the B meson study and $\xi = 7.02$ for the bottomonium study. The pion mass is approximately the same,...
Go to contribution page -
Takumi Doi31/07/2026, 14:002Hadronic and nuclear spectrum and interactionsContributed talk
A first-principles determination of hadron interactions is one of the most important subjects in particle, nuclear, and astrophysics. In particular, the determination of hyperon forces plays a crucial role in understanding not only the structure of hypernuclei but also the equation of state of dense matter and the internal structure of neutron stars.
Go to contribution page
In this talk, we will present lattice QCD... -
Vaibhav Chahar (Jagiellonian University, Poland)31/07/2026, 14:00
The instanton liquid model is believed to capture the main features of vacuum QCD dynamics. Recently, multiple predictions for hadron structure functions have been derived and compared with experimental measurements and lattice QCD calculations, showing general agreement. In order to explore the precision of the instanton liquid model, one has to compare its predictions with non-perturbative...
Go to contribution page -
Rui Xian Siew (Duke University)31/07/2026, 14:00Theoretical developments and applications beyond the Standard ModelContributed talk
Traditional Hamiltonian lattice gauge theory (LGT) regularizes continuum gauge fields using bosonic link degrees of freedom, leading to infinite-dimensional local Hilbert spaces. Qubit regularization takes a different route: it builds new gauge-invariant quantum lattice systems with finite-dimensional local Hilbert spaces from the outset and obtains continuum relativistic quantum field...
Go to contribution page -
Ivan Vujmilovic31/07/2026, 14:001Hadronic and nuclear spectrum and interactionsContributed talk
In this talk I will present preliminary results from an ongoing study of coupled $DD^* - D^*D^*$ scattering on the lattice. To obtain the finite-volume spectrum of the system we incorporate a variety of scattering interpolators in both channels, in addition to a local diquark-antidiquark operator, whose role in determining the energies of excited states for this system has recently emerged....
Go to contribution page -
Jesse Stryker (Lawrence Berkeley National Laboratory)31/07/2026, 14:00Quantum computing and quantum informationContributed talk
We present a quantum simulation of the SU(2) lattice gauge theory in 1+1 dimensions with one flavor of fermions, performed using both Quantinuum's trapped-ion H2-2 hardware and its emulator. This work is based on the loop-string-hadron (LSH) formulation of the gauge theory, and is distinguished by keeping the local bosonic degrees of freedom rather than integrating them out. Furthermore, we...
Go to contribution page -
Tatsuya Wada (YITP/Kyoto University)31/07/2026, 14:20
The hopping-parameter expansion (HPE) of the logarithm of the Wilson-fermion determinant expresses the coefficient of $\kappa^n$ as a sum over closed loops of length $n$. It is widely used in studies of heavy-quark QCD and in stochastic estimators of the fermion determinant. Although the expansion through sixth order, corresponding to LO and NLO, is well established, higher-order terms have...
Go to contribution page -
Neel Modi (UC Berkeley, Lawrence Berkeley National Lab)31/07/2026, 14:20Quantum computing and quantum informationContributed talk
We introduce a general framework for taking advantage of gauge symmetry to build quantum error-correcting codes (QECCs) that can be applied to Hamiltonian simulations for lattice gauge theories (LGTs) on quantum hardware. Our framework has the following features: (i) reduction of the overhead needed in physical qubits compared to alternative methods; (ii) arbitrary code distance, and therefore...
Go to contribution page -
Viljami Leino (U. Southern Denmark, QTC)31/07/2026, 14:20
The interaction of heavy quarkonium in QGP within the potential non-relativistic QCD framework can be characterized in terms of transport coefficients related to the correlators of color electric fields connected by adjoint Wilson lines. We present a lattice calculation of these correlators with both gradient flow and multilevel algorithms and extract the relevant transport coefficients. We...
Go to contribution page -
Malcolm Lazarow (UC Berkeley)31/07/2026, 14:20Hadronic and nuclear spectrum and interactionsContributed talk
In this talk, I will present preliminary results for nucleon-nucleon and nucleon-hyperon scattering on behalf of the BaSc collaboration. For both systems, I will discuss the ensembles used and the extracted spectra; collaborators will focus on the nucleon-nucleon finite-volume scattering analysis in separate talks. For the $S = -1$ nucleon-hyperon portion, I will showcase the current state of...
Go to contribution page -
Archana Radhakrishnan31/07/2026, 14:201Hadronic and nuclear spectrum and interactionsContributed talk
We determine the spectra of singly- and doubly-charmed baryons on $N_f=2+1$ ensembles generated by the Coordinated Lattice Simulations (CLS) effort with non-perturbatively improved Wilson fermions. The baryon masses are calculated along three trajectories in the plane spanned by the light and strange quark masses, two of which intersect close to the physical point, and a third approaching the...
Go to contribution page -
Nobuyuki Matsumoto (Boston University)31/07/2026, 14:20Theoretical developments and applications beyond the Standard ModelContributed talk
We report on a study of fully interacting QED3 in radial quantization with overlap fermions. By including a soft breaking mass for the flavor symmetry, and by varying the refinement level of the base icosahedral lattice as L=1, 2, 4, the possible spontaneous symmetry breaking (SSB) is studied. By using the radial quantization, the scaling symmetry is preserved, which makes it an ideal setup to...
Go to contribution page -
Kohei Sato (Center for Computational Sciences, University of Tsukuba)31/07/2026, 14:20
We report a preliminary study of light meson charge radii based on the PACS10 configurations generated by the PACS Collaboration at the physical point in spatial volumes larger than $(10\,\text{fm})^3$. Lattice QCD calculations of charge radii are generally subject to several sources of systematic uncertainty, including chiral extrapolation, discretization effects, finite-volume effects, and...
Go to contribution page -
Pietro Butti (QTC, University of Southern Denmark)31/07/2026, 14:40
The signal-to-noise problem limits the reach of many lattice calculations. We present a variational framework that recasts it as a transport problem: the loss of signal reflects a mismatch between the distribution one samples and the one needed to measure an observable, and can be reduced by transporting configurations to close that gap.
Go to contribution page
The optimal transport is typically determined either... -
Koichi Murase (The University of Osaka)31/07/2026, 14:40Hadronic and nuclear spectrum and interactionsContributed talk
We report the current status of first-principles lattice QCD results for the strangeness $S = -1$ sector of baryon-baryon interactions with the physical masses. We measure the two- and four-point functions on the (2+1)-flavor gauge configurations (HAL-conf-2023) [1] generated on the physical point, $(m_\pi, m_K) = (137, 502)~\mathrm{MeV}$. We calculate the Euclidean-time dependence of the...
Go to contribution page -
Jinzi Wu (The George Washington University)31/07/2026, 14:402Hadronic and nuclear spectrum and interactionsContributed talk
The Roper resonance does not fit many quark model predictions or lattice QCD calculations. One reason could be the strong three-body dynamics for this channel. The analysis of the Roper with lattice QCD requires a hadronic coupled-channel amplitude in the two- and three-body channels.
Go to contribution page
As a first step, we develop an amplitude that consistently and unitarily includes the $\pi N$ and $\pi\pi N$... -
sudip shiwakoti (Baylor University)31/07/2026, 14:40
The electric and magnetic polarizability of hadrons encodes information on their internal structure. Traditionally, the background field method has been used to calculate polarizabilities. However, recent work has demonstrated the effectiveness of using four-point functions for computing polarizabilities of charged and neutral hadrons. Our previous work employed a quenched Wilson action on a...
Go to contribution page -
John Laiho (Syracuse University)31/07/2026, 14:40Theoretical developments and applications beyond the Standard ModelContributed talk
We discuss the calculation of Euclidean correlation functions in lattice quantum gravity and in the low energy effective theory using perturbation theory. In the low energy theory the leading contributions are universal predictions of quantum gravity, depending only on Newton's constant, thus providing an important test for lattice calculations. We present the calculations in the low energy...
Go to contribution page -
Jorge Luis Dasilva Golan (brookhaven National Laboratory)31/07/2026, 14:40
We study charmonium and bottomonium properties at nonzero temperature using lattice QCD covering temperatures in the range 153 MeV $<T<$ 305 MeV. We compute Euclidean correlation functions using both point meson operators, where the quark and antiquark fields are located at the same spatial point, and extended meson operators, where the quark and antiquark fields are spatially separated to...
Go to contribution page -
Jinghong Yang31/07/2026, 14:401Quantum computing and quantum informationContributed talk
Quantum simulation offers a promising framework for quantum field theory calculations. Obtaining reliable results, however, requires careful characterization of systematic uncertainties. One important source is the boson truncation error, which arises from representing infinite-dimensional local Hilbert spaces with finite-dimensional ones. Previous studies have examined this problem from...
Go to contribution page -
Joseph Moscoso (UMD CP)31/07/2026, 15:00Hadronic and nuclear spectrum and interactionsContributed talk
We present a high-statistics study of nucleon-nucleon scattering in the SU(3) flavor-symmetric limit of QCD, where the light and strange quark masses are tuned to a common value corresponding to $m_\pi \approx 714$. We perform an extraction of NN scattering phase shifts across multiple partial waves using the Lüscher finite-volume quantization condition with multiple boost frames. The...
Go to contribution page -
John Meneghini (Carnegie Mellon University)31/07/2026, 15:002Hadronic and nuclear spectrum and interactionsContributed talk
We report on our completed study of the role of tetraquark interpolating operators in the isodoublet strange $\kappa$ and isovector nonstrange $a_0(980)$ scalar channels using $N_f = 2+1$ lattice QCD at $m_\pi \simeq 230\:\mathrm{MeV}$. We compare finite-volume spectra extracted using Hermitian correlation matrices constructed with and without tetraquark operators and find substantial...
Go to contribution page -
Dr Antonio Evangelista (University of Cyprus)31/07/2026, 15:00
In this talk, we present a study of the performance of low-mode averaging (LMA) techniques on twisted-mass fermion ensembles at near-physical quark masses, assessing both their theoretical foundations and practical cost-effectiveness in contemporary lattice QCD. We focus on light-quark meson and baryon observables and perform a detailed numerical investigation of the resulting variance...
Go to contribution page -
Pietro Rescigno (RIKEN R-CCS, Kobe)31/07/2026, 15:00
We report on the exploration of thermal QCD with $N_f=3$ flavours of $O(a)$-improved massless Wilson fermions up to electroweak-scale temperatures. We present results on screening masses at 12 temperatures ranging from 1 GeV to 165 GeV, in several flavor non-singlet mesonic channels, including the first and second non-static Matsubara sectors with frequencies 2πT and 4πT, respectively. For...
Go to contribution page -
Juan Falceto31/07/2026, 15:001Theoretical developments and applications beyond the Standard ModelContributed talk
In recent years, a lot of evidence has been gathered for exponential clover Wilson fermions suggesting that cutoff effects are reduced compared to standard clover improved Wilson fermions. The exponential clover implementation gives rise to new vertices in perturbation theory, which need to be incorporated in perturbative calculations of, e.g., improvement coefficients. Here, we study possible...
Go to contribution page -
Jason Elhaderi (University of Illinois, Urbana-Champaign)31/07/2026, 15:00Quantum computing and quantum informationContributed talk
Quantum simulations of $SU(N)$ lattice gauge theory (LGT) in the irrep basis require classical precomputation of Clebsch-Gordan coefficients (CGCs). Strategically choosing the direct-sum basis to maximize the symmetries of the CGCs plausibly translates into gate count reductions for the time-evolution circuit. One such choice occurs when two or more $SU(N)$ irreps in a tensor product are...
Go to contribution page -
Urs Wenger (University of Bern)31/07/2026, 15:00
Classically perfect fixed-point (FP) actions based on the renormalization group allow to reliably extract continuum physics from Monte Carlo simulations at coarse lattice spacings, thereby avoiding topological freezing. While these FP actions are very complicated, machine-learned gauge-equivariant neural networks enable accurate parametrizations and efficient simulations. In this talk I...
Go to contribution page -
Kei Tohme (Kyoto University)31/07/2026, 15:20
We investigate the chemical-potential ($\mu$) dependence of gluon screening masses in two-color QCD ($\mathrm{QC_2D}$) at finite density using lattice simulations.
Previous studies on this topic have reported conflicting results. One group concluded that both the electric and magnetic screening masses are independent of $\mu$, whereas another reported that the electric screening mass...
Go to contribution page -
Hiromasa Watanabe (Keio University)31/07/2026, 15:20Quantum computing and quantum informationContributed talk
We study a $q$-deformed ${\rm SU}(N)$ Yang-Mills theory in 2+1 dimensions using the lattice Hamiltonian formalism. The deformation introduces a finite level $k$, which truncates representations and allows the theory to interpolate between a confining regime and a topologically ordered regime. Treating $N$, the Yang-Mills coupling $g$, and $k$ as independent control parameters, we analyze the...
Go to contribution page -
Daniel Nogradi31/07/2026, 15:20
The 4-dimensional hypercubic lattice has a symmetry group with 384 elements. The 16-cell honeycomb lattice has 3 times as many elements, hence a larger symmetry. Motivated by this fact we discretize lattice QCD on this lattice and observe better scaling for gauge observables and better chiral properties for the Wilson-type Dirac operator. Even though a lattice site has 24 neighbors and not 8...
Go to contribution page -
Kotaro Murakami31/07/2026, 15:201Hadronic and nuclear spectrum and interactionsContributed talk
Kaon-nucleon (KN) interactions with the strangeness $S=+1$ provide a testing ground for comparing lattice QCD with experiments. They also play an important role in understanding the partial restoration of chiral symmetry and in clarifying whether genuine pentaquarks exist. In this study, the S-wave KN interactions are derived using the HAL QCD method with $N_f=2+1$ quark flavors at the...
Go to contribution page -
Wren Yamada (RIKEN)31/07/2026, 15:201Hadronic and nuclear spectrum and interactionsContributed talk
The $\bar D N$ system is one of the simplest hadronic systems containing an open-charmed meson and a nucleon, yet its low-energy interaction remains to be fully understood. Existing phenomenological models predict interactions ranging from sufficiently strong attraction to form a pentaquark state to weak attraction or repulsion. On the experimental side, higher-statistics LHC Run 3 data are...
Go to contribution page -
Matteo Bresciani (Trinity College Dublin)31/07/2026, 15:201Theoretical developments and applications beyond the Standard ModelContributed talk
We present a non-perturbative determination of the renormalization constants of the non-singlet components of the QCD energy-momentum tensor on the lattice. The calculation is carried out with the Wilson plaquette gauge action and $N_f=3$ flavours of $O(a)$-improved Wilson fermions. The four independent renormalization constants, associated to the sextet and the triplet representations of the...
Go to contribution page -
Raza Sufian (New Mexico State University / BNL)31/07/2026, 15:20
Photons can acquire a hadronic structure through quantum fluctuations, effectively becoming a superposition of the $U(1)$ gauge boson of QED and QCD quark-gluon configurations. Consequently, in electron-proton scattering, partons from both the resolved photon and proton can participate in strong interactions, revealing the resolved photon's hadronic structure. Although this nonperturbative...
Go to contribution page -
Nobuyuki Matsumoto (Boston University)31/07/2026, 16:10Theoretical developments and applications beyond the Standard ModelContributed talk
We report on the gravitational wave spectrum study from the confinement transition in the one-flavor SU(4) Hyper Stealth Dark Matter theory. We use the multihistogram method to construct the Polyakov loop effective potential in the complex plane, from which the order of transition as well as the tunneling rate is obtained. This method allows us to study the gravitational wave spectrum down to...
Go to contribution page -
Vaishakhi Moningi (University of Connecticut)31/07/2026, 16:10
The low-mode contribution to the hadronic vacuum polarization dominates the total statistical error, making its efficient computation a critical bottleneck in lattice QCD determinations of the muon anomalous magnetic moment. We present and validate a strategy that leverages already available Fermilab Lattice/HPQCD/MILC HISQ eigenvectors to improve the statistics of our existing fat link...
Go to contribution page -
Geng Li31/07/2026, 16:10
We carry out the first lattice calculation of the charm quark density-density correlations for $1S$ and $1P$ conventional charmonia, as well as charmoniumlike states $\eta_{c1}(1^{-+})$ and $h_{c0}(0^{+-})$, which provide {\it ab initio} information about the internal spatial structures of these states. The spatial distributions of the charm quark and antiquark ($c\bar{c}$) in $1S$ and $1P$...
Go to contribution page -
William Detmold31/07/2026, 16:101Hadronic and nuclear spectrum and interactionsContributed talk
Spectroscopy in lattice field theory begins with the choice of interpolating operators used to couple to the desired quantum numbers. Since the Hilbert spaces of bosonic theories such as lattice QCD are essentially infinite dimensional, standard spectroscopy techniques depend strongly on this choice in practice and require implicit assumptions about unphysical operator-state overlaps. More...
Go to contribution page -
Katsumasa Nakayama (RIKEN)31/07/2026, 16:10
We apply the tensor renormalization group method to SU(N) non-Abelian gauge theories in three- and four-dimensional spacetime. Using a sampling approach for the gauge group elements, we obtain expectation values that are consistent with perturbation theory in both the strong- and weak-coupling regions. We propose several distributions for the random sampling and compare their performance at...
Go to contribution page -
David Clarke31/07/2026, 16:10
Most modern lattice QCD calculations take the masses of the light quarks to be degenerate, setting $m_u=m_d$, a choice that, while not exactly physical, increases computational efficiency and lowers the complexity of simulations and analysis. For many observables, the systematic error associated with this simplification is expected to be negligible, as $\Delta m_{ud}=m_d-m_u$ is significantly...
Go to contribution page -
Michael Wagman31/07/2026, 16:301Hadronic and nuclear spectrum and interactionsContributed talk
Multi-hadron spectroscopy is complicated by discretization and excited-state effects that must be disentangled to reliably resolve finite-volume energy differences entering quantization conditions. I will present precise constraints on baryon-baryon scattering from block Lanczos analyses of large interpolator sets, for which two-sided bounds provide constraints on the locations of LQCD...
Go to contribution page -
Mattia Bruno (Universita' di Milano-Bicocca)31/07/2026, 16:30
In this presentation we discuss a strategy to use experimental data from hadronic tau decays for the Hadronic-Vacuum-Polarization contribution to the muon anomalous moment. Having a model-independent determination of the corresponding isospin-breaking effects has been recently highlighted as a priority in the last White Paper. Here we present a strategy for their calculation from Lattice...
Go to contribution page -
Andrea Falzetti ("Sapienza" University of Rome)31/07/2026, 16:30Theoretical developments and applications beyond the Standard ModelContributed talk
The study of large-$N$ Yang-Mills theories is theoretically interesting because of the many mathematical simplifications that appear when the rank of the gauge group goes to infinity, and the dynamics of such theories is conjectured to be key to tackle other open problems such as the confinement mechanism. We report on the advancements in our efforts to compute the Glueball and Meson spectra...
Go to contribution page -
Jonna Marjaana Koponen (Bergische Universität Wuppertal)31/07/2026, 16:30
Over the past decades a number of resonances have been discovered, mostly in the charm sector, that do not fit into a simple quark model picture. A rigorous understanding of how these states arise from QCD and how they can be classified is required, which can only be attained in conjunction with advances in the calculational methods.
In addition to the study of masses and widths of stable...
Go to contribution page -
Takaaki Kuwahara (The University of Tokyo)31/07/2026, 16:30
The tensor renormalization group (TRG) is a numerical method that is, in principle, free from the sign problem and is regarded as a promising candidate for first-principles calculations of finite-density QCD. While many successful studies have been carried out for scalar and fermionic field theories, its application to gauge theories remains under development. In this talk, we propose a method...
Go to contribution page -
Jan Philipp Klinger (Goethe University Frankfurt)31/07/2026, 16:30
Once the number of massless fermions exceeds a critical value $N_f^*$, many-flavour QCD enters the conformal window, where chiral symmetry remains intact in the vacuum. In lattice simulations the theory can only be probed at a finite cutoff, finite temporal extent and nonzero quark mass. The latter invariably breaks chiral symmetry and thus one generically observes a thermal chiral transition...
Go to contribution page -
Lin Qiu (Old Dominion University)31/07/2026, 16:501Hadronic and nuclear spectrum and interactionsContributed talk
In this talk, I'll show our first implementation of the finite-volume $N/D$ representation to study two-baryon interactions from lattice QCD data. We include the left-hand cut induced by one-pion exchange in this formalism, and study the H-dibaryon at the SU(3)$_\text{F}$-symmetric point, with a pion mass around $417$MeV. The $N/D$ formalism is also compared to the Luscher quantization...
Go to contribution page -
Yusuke Shimada (YITP, Kyoto University)31/07/2026, 16:50
Dense QCD matter is expected to exhibit color-superconducting phases, such as the color-flavor-locked (CFL) phase. In the CFL phase, the color gauge symmetry is Higgsed, and the global $U(1)_B$ baryon-number symmetry is spontaneously broken. An interesting observation is that a hadronic superfluid phase at intermediate densities realizes the same pattern of global symmetry breaking. This...
Go to contribution page -
Benjamin Izett (ETH Zürich)31/07/2026, 16:50
We review the string formulation of gauge fields on a finite lattice with periodic boundary conditions, as proposed by Batrouni and Halpern in 1984. Simulation results using the Hybrid Monte Carlo algorithm are reported. The properties of the molecular dynamics force under gauge transformations are compared with the Wilson formulation and we discuss the application to Fourier acceleration.
Go to contribution page -
Francesca Margari (University of Rome Tor Vergata)31/07/2026, 16:50
The R-ratio is a phenomenologically important observable, relevant both in its own right and in applications such as the dispersive approach to the muon anomalous magnetic moment. A first-principles lattice QCD investigation of the R-ratio can be carried out with controlled statistical and systematic uncertainties, by introducing a suitable energy-smearing kernel and employing spectral...
Go to contribution page -
Anton Shcherbakov31/07/2026, 16:50
We will provide an update to the RBC-UKQCD collaborations on the lattice calculation of the position-space, long-distance $\pi^0$ exchange part of the HLbL contribution to the anomalous magnetic moment of the muon. We will present the results of the calculation from 48I and 64I gauge-field ensembles at $a^{-1}=1.73$ GeV and $a^{-1}=2.359$ GeV, respectively. Additionally, we will present the...
Go to contribution page -
Shuhei Yamamoto (BNL)31/07/2026, 17:10
The Field-Transformation Hybrid Monte-Carlo (FTHMC) algorithm potentially mitigates critical slowing down by combining the HMC with an invertible field transformation, originally proposed by Lüscher and motivated as trivializing the theory. In our previous study, using a single Jacobian-computable smearing step resembling stout smearing in 2+1 domain-wall fermion simulations, we found a...
Go to contribution page -
Manuel Schneider (National Yang Ming Chiao Tung University)31/07/2026, 17:10
The rich internal structure of hadrons is encoded in partonic functions, such as parton distribution functions (PDFs) and light-cone distribution amplitudes (LCDAs), which are crucial in collider experiments and decay processes. Calculating them from first principles remains a major challenge: they require matrix elements with a Wilson line along a light-like direction, which are not directly...
Go to contribution page -
Alessandro De Santis (Helmholtz-Institut Mainz, Johannes Gutenberg-Universität Mainz)31/07/2026, 17:10
Inclusive semileptonic decays of $B$ mesons play a central role in flavour physics, as they provide stringent tests of the Standard Model. These processes can now be studied from first principles using lattice QCD simulations combined with spectral reconstruction techniques. In this talk, we present the first non-perturbative calculation at physical point of the decay rate for the inclusive...
Go to contribution page -
Ivan Horvath (Nuclear Physics Institute, Řež-Prague, Czech Republic)31/07/2026, 17:10
The IR phase of thermal QCD is characterized, among other things, by power singularity of Dirac spectral density at zero (power near -1), and by an unusual pattern of IR spatial dimensions. The first aspect has also been proposed for density of states in chiral orthogonal Anderson models with off-diagonal logarithmic disorder. Here we identify the root cause and the precise form of that...
Go to contribution page -
Juan Fernandez-de la Garza (University of Bern)31/07/2026, 17:102Hadronic and nuclear spectrum and interactionsContributed talk
We present a preliminary lattice QCD study of the H-dibaryon at a close-to-physical pion mass from a spectroscopic analysis of the strangeness $S=-2$, iso-singlet baryon-baryon system on the CLS D200 ensemble. This ensemble has $m_\pi \simeq 200~\mathrm{MeV}$ and $m_K \simeq 480~\mathrm{MeV}$, using a $64^3 \times 128$ lattice with spacing $a \simeq 0.065~\mathrm{fm}$ and open temporal...
Go to contribution page -
Navdeep Singh Dhindsa (TIFR Mumbai)31/07/2026, 17:30
We apply the recently-developed technique of dimensional decomposition to eigenstates of chiral Anderson models. This approach provides the complete information on effective dimensions present in a spatial structure. We focus on the class of orthogonal models with logarithmic disorder in 3D, that bear interesting similarities to QCD in IR phase at the level of spectral densities.
Go to contribution page -
Oliver Witzel (University of Siegen)31/07/2026, 17:30
Gradient flow (GF) is a powerful concept to calculate important quantities in heavy flavor physics on the lattice. We showcase two examples:
First we demonstrate using GF to obtain matching factors for heavy-light currents fully nonperturbatively. This addresses the challenge that due to the large mass difference matching factors for a "mixed action setup" are often required. GF provides a...
Go to contribution page -
Juan Andres Urrea Nino (Trinity College Dublin)31/07/2026, 17:301QCD at nonzero temperature and densityPoster presentation
We report on the progress of our calculation of the $1^{-+}$ exotic charmonium hybrid state at finite temperature using anisotropic FASTSUM ensembles. Using a wide basis of operators proposed by the Hadron Spectrum Collaboration together with optimal distillation profiles, we extend our existing spectrum results at different temperatures below and above $T_c$ to include zero-temperature ones....
Go to contribution page -
Simon Catterall (Syracuse University)01/08/2026, 09:00
I will review recent results in lattice BSM with updates on composite Higgs, dark matter, supersymmetry, lattice gravity and chiral fermions. I will also describe new ideas such as symmetric mass generation and lattice anomalies.
Go to contribution page -
Andrea Shindler01/08/2026, 09:45
The gradient flow has become a powerful and versatile tool in lattice QCD calculations. At positive flow time, gauge and fermion fields are smoothed over a physical radius of order $\sqrt{t}$, providing an additional ultraviolet regulator that can simplify the construction and analysis of lattice observables. Physical quantities are then recovered by combining continuum extrapolations at fixed...
Go to contribution page -
Lu Meng (Southeast University)01/08/2026, 11:00
Multi-hadron spectroscopy from lattice QCD commonly relies on Lüscher-type finite-volume methods to extract infinite-volume scattering amplitudes from discrete energy levels. While highly successful for short-range interactions, standard analyses based on this strategy can become problematic when light-particle exchange generates nearby left-hand cuts.
In this talk, I will review recent...
Go to contribution page -
Christopher Monahan01/08/2026, 11:30
The determination of x-dependent hadron structure from lattice QCD is an increasingly mature endeavour; precision calculations, with control over all systematic uncertainties, hover on the horizon. Precise and accurate lattice calculations will complement the experimental data expected from JLab 12GeV and the future Electron-Ion Collider and shed new light on the internal structure of hadrons....
Go to contribution page -
Mr Gergely Marko (Eotvos Lorand University, Institute of Physics)01/08/2026, 12:002Theoretical developments and applications beyond the Standard ModelContributed talk
Axions were first proposed as a solution to the strong CP problem, but they also act as prime dark matter candidates. Detection of axions hinges on their conversion to photons, governed by the axion-photon coupling. Besides the direct, modeling dependent part, coupling can be realized through sea effects of the strong interaction. The value of the latter can be calculated directly from QCD. We...
Go to contribution page -
01/08/2026, 12:30
-
Prof. Zohreh Davoudi (University of Maryland)01/08/2026, 12:45
-
Constantinos Costa (Rinnoco Ltd)2Software development and machinesPoster presentation
We present an efficient Mathematica package for the automated calculation of multiloop Feynman diagrams in quantum field theory, supporting both lattice and dimensional regularization. Perturbative computations on the lattice are substantially more complicated than their continuum counterparts due to the nontrivial momentum dependence of lattice propagators and vertices, as well as the...
Go to contribution page -
Venkitesh Ayyar (Fermi National Laboratory)2Algorithms and artificial intelligencePoster presentation
Lattice gauge theory research, with its computationally intensive simulations and complex multi‑stage workflows, is well positioned to benefit from agentic AI systems. We demonstrate how such tools can support key components of lattice gauge theory research, including novel simulation code development using standard LQCD frameworks, HPC job orchestration, simulation data analysis, and...
Go to contribution page -
Jorge Baeza Ballesteros (DESY Zeuthen)Hadronic and nuclear spectrum and interactionsPoster presentation
The plane-wave quantization condition is a recently proposed alternative to the Lüscher two-particle formalism. It is based on the use of an effective potential to describe particle interactions and makes it possible to incorporate one-particle exchange (OPE) effects in the analysis of lattice results. From the potential, finite-volume energies and infinite-volume scattering amplitudes are...
Go to contribution page -
Christopher MonahanPlenary talk
-
Xiaoyang Wang (RIKEN-iTHEMS)Quantum computing and quantum informationContributed talk
The $n$-time correlation function is pivotal for establishing connections between theoretical predictions and experimental observations of a quantum system. Conventional methods for computing $n$-time correlation functions on quantum computers, such as the Hadamard test, generally require an ancilla qubit that controls the entire system -- an approach that poses challenges for digital quantum...
Go to contribution page -
Ryutaro Tsuji (KEK)Structure of hadrons and nucleiPoster presentation
We study disconnected diagram contributions to the nucleon structure with one of the PACS10 ensembles.
Go to contribution page
Our gauge configurations are generated by the PACS Collaboration with the stout-smeared $O(a)$ improved Wilson fermions and Iwasaki gauge action at $\beta=1.82$ corresponding to the lattice spacing of 0.9 fm.
In this talk, we present preliminary results for the disconnected contributions... -
Ramón Merino (Universidad de Granada)Hadronic and nuclear spectrum and interactionsPoster presentation
Lattice QCD computations using staggered quarks are affected by taste breaking and rooting effects that complicate the extraction of scattering amplitudes from lattice data. As a first step towards developing a scattering formalism for staggered quarks, we study $\pi-\pi$ scattering using next-to-leading order Staggered Chiral Perturbation Theory (SChPT) for generic incoming and outgoing pion...
Go to contribution page -
Matteo Saccardi (Colorado State University)1Hadronic and nuclear spectrum and interactionsPoster presentation
Smeared spectral functions are crucial in particle physics, with their extraction from noisy finite-volume lattice correlation functions presenting a numerically challenging inverse problem. In this poster, we present closure tests on a selection of phenomenologically-inspired toy models, separately focusing on finite-volume and numerical reconstruction artifacts. We first investigate the...
Go to contribution page -
Mischa Batelaan (Adelaide University)Quark and lepton flavor physicsPoster presentation
We present a lattice QCD calculation of the $K\to\pi$ vector-current matrix element using a flavour-changing Feynman-Hellmann approach, extending the transition-matrix-element formalism developed for baryons to the meson sector.
Go to contribution page
A flavour-changing temporal vector current added to the action mixes the $K$ and $\pi$ interpolating fields, and the matrix element $\langle K|V_4|\pi\rangle$ is read... -
Dr M. Padmanath (The Institute of Mathematical Sciences Chennai)Plenary talk
-
Henry Monge CamachoAlgorithms and artificial intelligencePoster presentation
Clover fermions are widely used in lattice QCD due to their cost effectiveness and O(a) improvement, but the condition number of their Dirac operator grows problematically at small quark masses and large lattice volumes, limiting HMC step sizes and simulation stability. Exponentiated clover fermions have emerged as an alternative that has shown a better-conditioned eigenvalue spectrum,...
Go to contribution page -
Miguel Salg (University of Bern)Hadronic and nuclear spectrum and interactionsPoster presentation
We present preliminary results on the isospin-0 $\pi\pi$ scattering amplitude determined from lattice QCD at a pion mass of 280 MeV and a single lattice spacing of about 0.064 fm. At around this pion mass, the $\sigma$/$f_0(500)$ meson transitions from being a virtual bound state to a resonance. In contrast to previous work, we use CLS ensembles on the $\mathop{\mathrm{tr}} M_q =...
Go to contribution page -
Neill Warrington (MIT)Quantum computing and quantum informationContributed talk
In this talk I present a novel application of lattice field theory to the theory of superconducting quantum hardware. This technique is used to develop and build quantum hardware and is in a sense the opposite of "putting a quantum field theory on a quantum computer". I will present the method and illustrate it with applications to a variety of superconducting quantum devices.
Go to contribution page -
Yosuke Asano (Kochi University)QCD at nonzero temperature and densityPoster presentation
We study color screening effects at finite temperatures using quenched $SU(2)$ lattice gauge simulations. We extract gluon electric and magnetic masses from long-range behavior of the gluon propagators on temperature regions $T=T_c\sim5T_c$. We also calculate them without nonperturbative effects by removing the center vortices on the lattice. As a result, we find that there is no distinction...
Go to contribution page -
Dr Antonio Evangelista (University of Cyprus)Quark and lepton flavor physicsPoster presentation
In this work, we investigate the impact of radiative corrections on the ratio of the semileptonic decay rates $\Sigma^{\pm} \to \Lambda \ell^{\pm}\nu$. Experimentally, the measured ratio suggests the presence of sizable radiative corrections. From a theoretical perspective, this observable is particularly attractive, as several hadronic and electroweak contributions partially cancel in the...
Go to contribution page -
Nehal Khosla (Temple University)Structure of hadrons and nucleiPoster presentation
Recent developments in large-momentum effective theory (LaMET) and short-distance factorization (SDF) enable access to the $x$ dependence of generalized parton distributions through matrix elements of nonlocal operators. Using a Lorentz-invariant decomposition of matrix elements computed in an asymmetric kinematic frame, we determine the corresponding invariant amplitudes. This approach...
Go to contribution page -
Dr Marios Costa (Cyprus University of Technology)2Theoretical developments and applications beyond the Standard ModelPoster presentation
We investigate the perturbative renormalization of Noether currents associated with chiral symmetry and supersymmetry transformations in $\mathcal{N}=1$ supersymmetric Yang–Mills theory, regularized on the lattice using improved discretizations. In particular, we study the chiral current and the supercurrent operator for a broad class of lattice actions: Wilson fermions with one-step...
Go to contribution page -
Isaac Anderson (Temple University)Structure of hadrons and nucleiPoster presentation
We present a lattice QCD determination of the Mellin moments for the unpolarized gluon PDF in the proton across three ensembles of $N_f = 2 {+} 1 {+} 1$ maximally twisted mass fermions with Iwasaki-improved gluons all at a pion mass of approximately 260 MeV and lattice spacings of $a=0.091,\,0.079,\,0.057$ fm, which allow us to explore the continuum limit. We use the operator product expansion...
Go to contribution page -
Nabil HumphreySoftware development and machinesPoster presentation
QUDA is a widely used library of GPU-optimised kernels for lattice QCD whose highly tuned Dirac-operator solvers can accelerate propagator inversions, which usually dominate the overall calculation time. However, not every fermion action maps cleanly onto its interface: the Stout-Link Non-perturbative Clover (SLiNC) fermion action uses distinct gauge fields for the Wilson hopping term...
Go to contribution page -
Guido Tempestilli (INFN Roma Tre)Quark and lepton flavor physicsPoster presentation
We study the charmonia 1S vector channel decays, corroborating the estimate for the $J/\psi \rightarrow \eta_c \gamma$ decay and performing detailed analysis of the $\eta_c$-pole contribution to the $J/\psi \rightarrow \gamma \eta_c^\ast \rightarrow \nu\bar{\nu}$ decay rate.
We also present our results for the mean square radii $\langle r_{J/\psi}^2 \rangle$ and $\langle r_{\eta_c}^2...
Go to contribution page -
Anna HasenfratzAlgorithms and artificial intelligencePoster presentation
Near criticality, the correlation length becomes large, so a generative model trained from unstructured Gaussian noise must learn both infrared physics and ultraviolet fluctuations. We propose an inverse-blocking strategy that separates these tasks: coarse configurations provide the long-distance structure, while a local transported-detail normalizing flow proposes the missing fine degrees of...
Go to contribution page -
Alessandro Conigli, Fernando Pérez Panadero (IFT-UAM/CSIC), Pietro Butti (Quantum Theory Center, IMADA and D-IAS, University of Southern Denmark)1Theoretical developments and applications beyond the Standard ModelPoster presentation
The computation of the topological susceptibility in lattice gauge theory requires a smoothing procedure for the gluonic topological charge, with cooling and gradient flow being the most commonly adopted approaches. While cooling is computationally cheaper, gradient flow admits a Symanzik expansion that is easier to compute and allows for a clean identification of leading order cutoff...
Go to contribution page -
Jacob Sitison (University of Colorado Boulder)Quark and lepton flavor physicsPoster presentation
Chiral perturbation theory ($\chi$PT) is the effective field theory (EFT) of QCD at low energies and is routinely used to complement lattice QCD analyses. EFT matching can be used to relate objects, such as operators and correlators, in the UV theory (QCD) to those in the IR EFT ($\chi$PT). In this poster, we present a charge matrix spurion analysis to match diagrams with external vector...
Go to contribution page -
Shaun LahertSoftware development and machinesPoster presentation
We present stagTools, an open-source Python package for staggered-quark calculations in lattice QCD. The package provides group-theoretical tools, including irreducible representation subduction and the computation of Clebsch–Gordan coefficients. It further automates the generation of Wick contractions for general n-point staggered correlation functions and provides straightforward numerical...
Go to contribution page -
Antonio Smecca (INFN - Sezione di Roma Tre)Hadronic and nuclear spectrum and interactionsPoster presentation
We present a lattice QCD study of the finite-volume $I=1$, P-wave two-pion spectrum at physical quark masses using twisted-mass fermions. We determine the six lowest-lying energy levels in a spatial box of approximately 5.1 fm, and compare our preliminary results with the corresponding finite-volume spectrum obtained from the Gounaris-Sakurai parametrization of the timelike pion...
Go to contribution page -
Prof. Zohreh Davoudi (University of Maryland)
Choose timezone
Your profile timezone: