# EPS HEP 2015

22-29 July 2015
Europe/Vienna timezone

## A class of 2D non-abelian gauged linear sigma models

Jul 25, 2015, 9:30 AM
15m
HS32

### HS32

talk Non-Perturbative Field Theory and String Theory

### Speaker

Mr Andreas Gerhardus (Bethe Center for Theoretical Physics, Universität Bonn)

### Description

Two-dimensional gauged linear sigma models with $N=(2,2)$ supersymmetry are a powerful tool for studying the worldsheet theories of type II string compactifications. We construct a certain class of non-abelian gauged linear sigma models that exhibit an interesting phase structure emerging from non-Abelian strong coupling dynamics. The observed phase structure leads to a duality proposal amongst these models, for which we provide further evidence by matching the respective two sphere partition functions. As some of the models at low energies flow to non-linear sigma models with Calabi-Yau target spaces, the duality proposal results in a correspondence of non-complete intersection Calabi-Yau varieties.

### Primary author

Mr Andreas Gerhardus (Bethe Center for Theoretical Physics, Universität Bonn)