Workshop on the sign problem in QCD and beyond
from
Monday, 20 January 2025 (11:00)
to
Friday, 24 January 2025 (13:00)
Monday, 20 January 2025
11:00
Registration
11:00 - 12:30
Room: Lecture Hall 099 (ExWi Building)
12:30
Lunch Break
Lunch Break
12:30 - 13:30
13:30
Opening
13:30 - 13:45
Room: Lecture Hall 099 (ExWi Building)
Contributions
13:30
Welcoming notes
-
Urs Wenger
(
University of Bern
)
13:45
Monday afternoon
13:45 - 15:30
Room: Lecture Hall 099 (ExWi Building)
Contributions
13:45
Easing the sign problem in many-body physics
-
Jens Eisert
14:30
Lattice QCD sign problem as an inverse problem
-
Francesco Di Renzo
15:30
Coffee Break
Coffee Break
15:30 - 16:00
Room: Lecture Hall 099 (ExWi Building)
16:00
Monday afternoon
16:00 - 17:45
Room: Lecture Hall 099 (ExWi Building)
Contributions
16:00
Minimal pole representation and controlled analytic continuation of Matsubara response functions
-
Emanuel Gull
16:45
QCD deconfinement transition line up to $\mu_B=400$~MeV from finite volume lattice simulations
-
Ludovica Pirelli
(
Bergische Universität Wuppertal
)
18:00
Welcome Reception
18:00 - 20:00
Room: Lobby (ExWi Building)
Tuesday, 21 January 2025
08:30
Tuesday morning
08:30 - 10:15
Room: Lecture Hall 099 (ExWi Building)
Contributions
08:30
Complex instanton gas approximation for the Hubbard model away of half-filling
-
Maksim Ulybyshev
(
University of Wuerzburg
)
09:15
Convex methods for sign problems
-
Scott Lawrence
(
Los Alamos National Laboratory
)
10:15
Coffee Break
Coffee Break
10:15 - 10:45
Room: Lecture Hall 099 (ExWi Building)
10:45
Tuesday morning
10:45 - 12:30
Room: Lecture Hall 099 (ExWi Building)
Contributions
10:45
Phase Diagram of the Schwinger Model by Adiabatic Preparation of States on a Quantum Simulator
-
Oleg Kaikov
(
Université Paris-Saclay, CEA-List
)
11:30
BBGKY hierarchy for zero noise extrapolation in quantum error mitigation
-
Theo Saporiti
(
Université Paris-Saclay
)
12:30
Lunch Break
Lunch Break
12:30 - 13:30
13:30
Tuesday afternoon
13:30 - 15:45
Room: Lecture Hall 099 (ExWi Building)
Contributions
13:30
Prospects for Quantum Simulations of the Strong Coupling Expansion
-
Wolfgang Unger
14:15
Correlated Cluster Algorithms
-
Thea Budde
(
ETH Zürich
)
15:00
Abelian Gauge Theories in 1+1D with Correlated Cluster Algorithms
-
Joao C. Pinto Barros
(
Institute for Theoretical Physics, ETH Zurich
)
15:45
Coffee Break
Coffee Break
15:45 - 16:15
Room: Lecture Hall 099 (ExWi Building)
16:15
Tuesday afternoon
16:15 - 18:00
Room: Lecture Hall 099 (ExWi Building)
Contributions
16:15
Wormhole quantum Monte Carlo for quantum dissipative spin systems
-
Manuel Weber
(
TUDresden
)
17:00
Rotating gluodynamics and QCD: sign problem, mixed inhomogeneous phase and moment of inertia
-
Artem Roenko
(
JINR
)
Wednesday, 22 January 2025
08:30
Wednesday morning (Uwe-Jens Wiese mini-symposium part 1)
08:30 - 10:15
Room: Lecture Hall 099 (ExWi Building)
Contributions
08:30
The Ising Model on a Curved Manifold -- The Affine Conjecture
-
Richard Brower
(
Boston University
)
09:15
How many states are gauge invariant?
-
Alessandro Mariani
10:15
Coffee Break
Coffee Break
10:15 - 10:45
Room: Lecture Hall 099 (ExWi Building)
10:45
Wednesday morning (Uwe-Jens Wiese mini-symposium part 1)
10:45 - 12:30
Room: Lecture Hall 099 (ExWi Building)
Contributions
10:45
Sign-blessed thermodynamics of interacting fermions
-
Nikolay Prokofiev
(
University of Massachusetts Amherst
)
11:30
Homotopic Action: A Pathway to Convergent Diagrammatic Theories
-
Boris Svistunov
(
University of Massachusetts Amherst
)
12:30
Lunch Break
Lunch Break
12:30 - 14:00
14:00
Wednesday afternoon (Uwe-Jens Wiese mini-symposium part 2)
14:00 - 15:45
Room: Lecture Hall 099 (ExWi Building)
Contributions
14:00
Sign Problem Free Qubit Regularized Hamiltonian Lattice Gauge Theories
-
Shailesh Chandrasekharan
(
Duke University
)
14:45
Confronting the sign problem for frustrated magnets
-
Fakher Assaad
15:45
Coffee Break
Coffee Break
15:45 - 16:15
Room: Lecture Hall 099 (ExWi Building)
16:15
Wednesday afternoon (Uwe-Jens Wiese mini-symposium part 2)
16:15 - 17:30
Room: Lecture Hall 099 (ExWi Building)
Contributions
16:15
Following Uwe-Jens' Journey of Major Discoveries
-
Wolfgang Bietenholz
17:00
Personal reflections
-
Shailesh Chandrasekharan
18:30
Workshop dinner
18:30 - 22:30
Thursday, 23 January 2025
08:30
Thursday morning
08:30 - 10:15
Room: Lecture Hall 099 (ExWi Building)
Contributions
08:30
Kernels and integration cycles in complex Langevin simulations
-
Michael Mandl
(
University of Graz
)
09:15
Machine learning kernels in complex Langevin for real time evolution
-
Enno Carstensen
(
University of Graz
)
10:15
Coffee Break
Coffee Break
10:15 - 10:45
Room: Lecture Hall 099 (ExWi Building)
10:45
Thursday morning
10:45 - 12:30
Room: Lecture Hall 099 (ExWi Building)
Contributions
10:45
Enhancing Complex Langevin with Lefschetz Thimble-Based Regularizations
-
Paul Hotzy
(
TU Wien
)
11:30
System specific prior knowledge - a key tool to tackle the sign problem
-
Alexander Rothkopf
(
University of Stavanger
)
12:30
Lunch Break
Lunch Break
12:30 - 14:00
14:00
Thursday afternoon
14:00 - 15:45
Room: Lecture Hall 099 (ExWi Building)
Contributions
14:00
Constant path integral contour shifts
-
Johann Ostmeyer
(
University of Bonn
)
14:45
Contour optimisation for the sign problem with an efficient evaluation of the Jacobian
-
Michael Kroyter
(
Holon Institute of Technology
)
15:45
Coffee Break
Coffee Break
15:45 - 16:15
Room: Lecture Hall 099 (ExWi Building)
16:15
Thursday afternoon
16:15 - 18:00
Room: Lecture Hall 099 (ExWi Building)
Contributions
16:15
Quantum Computing for Lattice Field Theory
-
Lena Funcke
(
University of Bonn
)
17:00
Variational Quantum Eigensolver for (2+1)-Dimensional QED at Finite Density
-
Emil Otis Rosanowski
Friday, 24 January 2025
08:30
Friday morning
08:30 - 10:15
Room: Lecture Hall 099 (ExWi Building)
Contributions
08:30
Testing dynamical stabilization of Complex Langevin simulations of QCD
-
Dénes Sexty
09:15
Diffusion models for complex Langevin dynamics
-
Gert Aarts
(
Swansea University
)
10:15
Coffee Break
Coffee Break
10:15 - 10:45
Room: Lecture Hall 099 (ExWi Building)
10:45
Friday morning
10:45 - 12:15
Room: Lecture Hall 099 (ExWi Building)
Contributions
10:45
External and Dynamic Gauge Fields in Strong-Field QED
-
Óscar Amaro
(
GoLP/Instituto de Plasmas e Fusão Nuclear, Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisbon, Portugal
)
11:30
Towards Real-Time Observables from First Principles: Correlators in 3+1D Yang-Mills Theory
-
Kirill Boguslavski
(
TU Wien (AT)
)
12:15
Closing
12:15 - 12:30
Room: Lecture Hall 099 (ExWi Building)