Entropy of near-extremal dyonic black holes

TL;DR

This paper demonstrates that near-extremal four-dimensional dyonic black holes with non-constant dilaton can be modeled microscopically as a one-dimensional gas of massless particles, providing insights into their entropy.

Contribution

It introduces a microscopic model for near-extremal dyonic black holes with varying dilaton, linking their entropy to a gas of massless particles.

Findings

Black hole entropy matches the microscopic model predictions

The model applies to non-constant dilaton scenarios

Provides a new perspective on black hole microstates

Abstract

In this note it is shown that near-extremal four dimensional dyonic black holes, where the dilaton is not constant, can be described by a microscopic model consisting of a one-dimensional gas of massless particles.