Coset Models Obtained by Twisting WZW Models and Stringy Charged Black Holes in Four Dimensions

TL;DR

This paper demonstrates how certain WZW coset models can be generated through twisting transformations and derives solutions describing four-dimensional charged black holes by applying these methods to specific WZW models.

Contribution

It introduces a novel approach of obtaining WZW coset models via twisting transformations and constructs charged black hole solutions in four dimensions from these models.

Findings

WZW coset models can be generated by twisting WZW models.

Charged black hole solutions are derived from twisted WZW models.

The approach suggests a new way to explore string theory solutions.

Abstract

We show that several WZW coset models can be obtained by applying O(d,d) symmetry transformations (referred to as twisting) on WZW models. This leads to a conjecture that WZW models gauged by U(1)^n subgroup can be obtained by twisting (ungauged) WZW models. In addition, a class of solutions that describe charged black holes in four dimensions is derived by twisting SL(2,R)\times SU(2) WZW.