Cristofero Fraser-Taliente

• Title: Computation of Quark Masses in String Theory

• Abstract: We present a numerical computation, based on neural network techniques, of the physical Yukawa couplings in a heterotic string theory model obtained by compactifying on a smooth Calabi-Yau threefold.  The model in question is one of a large class of heterotic line bundle models with precisely the MSSM low-energy spectrum plus fields uncharged under the standard-model group. Suitable neural networks are used to compute the relevant quantities: the Ricci-flat Calabi-Yau metric, Hermitian Yang-Mills bundle metrics and harmonic bundle-valued forms. We carry out the calculation at various points along a one-parameter family in complex structure moduli space. The methods presented here generalise to other string models and constructions.

Gregory Loges

• Title: An Enumeration of 6D Supergravities

• Abstract: In six dimensions supergravities with minimal supersymmetry are subject to strong constraints from anomaly cancellation. Nevertheless, a large number of models survive and it is an interesting question to understand their extent and relationship with the string landscape. In this talk I will discuss recent work towards systematically enumerating all consistent models, including an exhaustive enumeration for zero and one tensor multiplets. Based on [2311.00868] and [2404.08845] with Yuta Hamada.