Microstates of a Neutral Black Hole in M Theory

TL;DR

This paper explores the microstates of a neutral black hole in M theory, demonstrating a D-brane description that matches the black hole's entropy even without supersymmetry.

Contribution

It provides a D-brane microscopic model for a neutral black hole in M theory that accurately reproduces its entropy in the extremal limit.

Findings

D-brane description matches Hawking-Bekenstein entropy

Solutions include five-dimensional neutral rotating black holes

Supersymmetry is fully broken in the considered solutions

Abstract

We consider vacuum solutions in M theory of the form of a five-dimensional Kaluza-Klein black hole cross T^6. In a certain limit, these include the five-dimensional neutral rotating black hole (cross T^6). From a IIA standpoint, these solutions carry D0 and D6 charges. We show that there is a weakly coupled D-brane description which precisely reproduces the Hawking-Bekenstein entropy in the extremal limit, even though supersymmetry is completely broken.