On EVH black hole solution in Heterotic string theory

TL;DR

This paper investigates the near horizon geometries of extremal vanishing horizon black holes in heterotic string theory, revealing an AdS3 throat and BTZ structure, and discusses potential dual conformal field theories.

Contribution

It demonstrates the emergence of AdS3 and BTZ geometries in the near horizon limit of EVH black holes within heterotic string theory, providing insights into their dual CFT descriptions.

Findings

Near horizon geometry develops an AdS3 throat.

Near EVH black holes exhibit a BTZ factor.

Comments on the dual CFT to the near horizon geometry.

Abstract

We study the near horizon geometry of charged rotating black holes in toroidal compactifications of heterotic string theory. We analyze the extremal vanishing horizon (EVH) limit for these black hole solu- tions and we will show that the near horizon geometry develops an AdS3 throat. Furthermore, we will show that the near horizon limit of near EVH black holes has a BTZ factor. We also comment on the CFT dual to this near horizon geometry.