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**Video URL**
http://pirsa.org/21120033

## Abstract

The quantization of a non-linear sigma model in 1+1 dimensional space-time, whose target space is equipped with a non positive definite metric is an interesting open problem having potential applications to string theory and Condensed Matter Physics. Perhaps the simplest example where it can be studied is the 2D Lorentzian black hole sigma model that was introduced by Witten in '91. The purpose of this talk is to discuss the results of the paper arXiv:2010.10613. There it was found that the scaling limit of a certain spin chain, that lies within the integrability class of an inhomogeneous six-vertex model, is closely related to the Lorentzian black hole sigma model and its Euclidean version.

Zoom Link: https://pitp.zoom.us/j/91519988720?pwd=RTdrT1NWc3V0SXZVTGxETVBlTm5YUT09

## Details

**Talk Number**21120033

**Speaker Profile**Gleb Kotousov

**Collection**Quantum Fields and Strings

- Quantum Fields and Strings

**Scientific Area**

- Scientific Series

**Talk Type**

**Subject**High Energy Physics

**Source Repository**PIRSA