Statistical Entropy of Four-Dimensional Extremal Black Holes

TL;DR

This paper uses string theory to count microstates of four-dimensional extremal black holes with supersymmetry, confirming the Bekenstein-Hawking entropy for large charges.

Contribution

It provides a microstate counting approach for extremal black holes in string theory with supersymmetry, matching classical entropy calculations.

Findings

Microstate counts agree with Bekenstein-Hawking entropy for large charges.

Validates string theory microstate counting for extremal black holes.

Supports the consistency of string theory with black hole thermodynamics.

Abstract

String theory is used to count microstates of four-dimensional extremal black holes in compactifications with $N=4$ and $N=8$ supersymmetry. The result agrees for large charges with the Bekenstein-Hawking entropy.