Five-dimensional heterotic black holes and its dual IR-CFT

TL;DR

This paper investigates how near-extremal five-dimensional heterotic black holes develop an AdS3 throat and a dual IR conformal field theory, especially when extremal horizons vanish, connecting gravity solutions with CFT descriptions.

Contribution

It demonstrates the emergence of an IR CFT in near-extremal heterotic black holes with vanishing horizon area and compares it with existing c-extremization and Kerr/CFT frameworks.

Findings

AdS3 throat forms in near-horizon geometry of certain black holes

Dual IR CFT description is valid in low-energy, weak-coupling limit

Results align with c-extremization and Kerr/CFT predictions

Abstract

We analyze the possible dynamical emergence of IR conformal field theory describing the low- energy excitations of near-extremal black holes in five-dimensional compactification of heterotic strings. We find that, by tuning the mass and charges in such a way that the extremal black holes have a classically vanishing horizon area, the near-horizon develops an AdS3 throat and when we combine the low-energy limit with vanishing Newton coupling constant, the system has a dual conformal field theory description. We compare our results with c-extremization and the Kerr/CFT predictions.