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Elijah Sheridan08/07/2025, 13:30
The Krezuer-Skarke (KS) database of toric hypersurface Calabi-Yau (CY) threefolds arising from fine, regular, star triangulations (FRSTs) of 4D reflexive polytopes—following Batyrev's original construction—has long provided an important setting for explicit model building in string phenomenology. It is known, however, that the Kahler moduli spaces of KS Calabi-Yau geometries are not fully...
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José Calderón-Infante08/07/2025, 13:48
In this talk, I will present a novel CFT-based argument against continuous shift symmetries in AdS/CFT. Unlike other global symmetries, continuous scalar shift symmetries have a clear CFT counterpart: the existence of a conformal manifold along which the CFT data does not change. This allows us to ask whether a local and unitary CFT can exhibit such a property. We provide a purely CFT argument...
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Andrew Turner08/07/2025, 14:06
The monad bundle construction is a useful tool to build a large class of holomorphic, polystable vector bundles for use in heterotic string compactifications. While it is well-known how to construct monad bundles with SU(n) structure, constructing monad bundles with reduced structure groups remains relatively unexplored. In this talk, we will introduce new techniques to construct kernel...
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Sunit Patil08/07/2025, 14:24
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Maki Takeuchi08/07/2025, 14:42
We investigate the independent chiral zero modes on the orbifolds from the Atiyah-Segal- Singer fixed point theorem. The required information for this calculation includes the fixed points of the orbifold and the manner in which the spatial symmetries act on these points, unlike previous studies that necessitated the calculation of zero modes. Since the fixed point theorem can be applied to...
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Matteo Zatti08/07/2025, 15:30
We revisit and study quantum corrections to the supersymmetric
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entropy of BPS black holes in 4d N=2 supergravity, which can be obtained
from Type IIA string theory compactified on a Calabi–Yau threefold.
Macroscopically, these corrections arise from an infinite series of
higher-derivative F-terms that encode modifications to the
two-derivative supergravity effective action. They result... -
Alberto Castellano Mora08/07/2025, 15:48
We investigate quantum corrections to the supersymmetric entropy of BPS black holes in 4d N=2 effective field theories, derived from Type IIA string theory on a Calabi–Yau threefold. These corrections arise from an infinite series of higher-derivative F-terms modifying the two-derivative supergravity action. Within the large volume regime, we analyze their moduli dependence as well as the...
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Chen-Te Ma08/07/2025, 16:06
We study the 2D fermionic SYK model with Majorana fermions, featuring a kinetic term with a quartic expression and a $2q$-body interaction with Gaussian disorder. By minimizing the effective action or solving the SD equation for $q=1$, we determine that the appropriate ansatz involves zero spins. Our computation of the Lyapunov exponent shows violations of chaos and unitarity bounds. The...
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James Gray08/07/2025, 16:24
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Miguel Morros08/07/2025, 16:42
One of the challenges of Calabi-Yau compactifications is to stabilise the complex structure and Kähler moduli corresponding to the deformations of the internal space. If they were left massless, they would give rise to phenomenologically irrelevant string vacua. In type IIB string theory, only complex structure moduli can be stabilised by turning on fluxes in the internal space. Besides, the...
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Jakob Moritz10/07/2025, 13:30
I will argue that perturbatively flat vacua of type IIB string theory are dual to M-theory compactifications on $G_2$-manifolds without four-form flux. As a consequence, one can, implicitly, construct enormous numbers of $G_2$-manifolds by solving Diophantine equations in type IIB flux quanta. This duality can be used to compute warping corrections to the Kähler potential and Kähler...
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Subham Roy10/07/2025, 13:48
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Ajit Kumar10/07/2025, 14:06
In this talk, I will discuss about our work on understanding the infrared (IR) dynamics of four-dimensional N=1 SU(N) chiral gauge theories with antisymmetric or symmetric rank-2 tensor matter. While Seiberg duality has been instrumental in constructing dual descriptions for theories with fundamental and anti-fundamental matter a systematic duality framework is lacking for tensorial theories....
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Hamza Ahmed10/07/2025, 14:24
In this talk, we explore the phenomenological potential of heterotic line bundle models as a promising framework for deriving the Standard Model from string theory. We present a systematic approach to constrain the low-energy effective theories derived from such compactifications using remnants of anomalous U(1) symmetries to retrieve realistic quarks and leptons masses, mixing patterns and...
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Xingyang Yu10/07/2025, 14:42
In Calabi–Yau compactifications, the Bagger–Witten line bundle captures how the $U(1)_R$ symmetry varies over SCFT moduli space. For compactifications on $\mathrm{Spin}(7)$ and $G_2$ manifolds, the worldsheet theories include Ising and tricritical Ising sectors, whose non-invertible fusion categorical symmetries generalize the role of $U(1)_R$. In this talk, I propose a categorified version of...
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Muthusamy Rajaguru10/07/2025, 15:30
In this talk, we discuss various aspects of Minkowski vacua arising in the $1^9$ and $2^6$ Landau-Ginzburg Models. In particular, we present fully stabilized $\mathcal{N}=1$ Minkowski vacua and violations of the refined tadpole conjecture. We also comment on symmetry arguments that could potentially explain the existence of flat directions in these models.
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Ethan Torres10/07/2025, 15:48
Symmetry topological field theories (SymTFTs) have been very useful tools in recent years for studying the generalized symmetries and 't Hooft anomalies of QFTs. When a QFT has a semiclassical holographic dual, there is typically a neat dictionary between the SymTFT data and configurations of various branes in the string background. In this talk, we will address such a dictionary in cases...
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Michelangelo Tartaglia10/07/2025, 16:06
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Pellegrino Piantadosi10/07/2025, 16:24
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Yidi Qi10/07/2025, 16:42
Special Lagrangian (sLags) submanifolds are crucial objects for string phenomenology and the SYZ conjecture, yet their explicit construction remains a significant challenge in geometry. In this talk, we introduce a novel computational framework to tackle this problem. Using the Fermat Quintic as a primary testbed, our approach leverages a Quality-Diversity (QD) search algorithm to navigate...
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