BTZ Black Hole Entropy: A spin foam model description

TL;DR

This paper explains the entropy of BTZ black holes through a quantum gravity approach using spin foam models, linking geometrical observables at the horizon to statistical descriptions.

Contribution

It introduces a novel spin foam model framework to microscopically derive BTZ black hole entropy based on quantum geometric observables.

Findings

Black hole entropy expressed via spin foam geometrical observables

Provides a microscopical quantum gravity explanation for BTZ black hole entropy

Connects geometrical and statistical descriptions of black hole horizons

Abstract

We present a microscopical explanation of the entropy of the BTZ black hole using discrete spin foam models of quantum gravity. The entropy of a black hole is given in geometrical terms which lead us to think that its statistical description must be given in terms of a quantum geometry. In this paper we present it in terms of spin foam geometrical observables at the horizon of the black hole.