Entropy of Schwarzschild Black Holes on DGP Brane

TL;DR

This paper investigates the entropy of Schwarzschild black holes on DGP branes, finding small differences in horizon size and entropy compared to Einstein gravity, using numerical and improved brick-wall methods.

Contribution

It provides a numerical analysis of black hole horizon radius and entropy on DGP branes, highlighting subtle deviations from Einstein gravity.

Findings

Horizon radius is slightly smaller in the conventional branch and larger in the accelerated branch.

Black hole entropy is computed using an improved brick-wall method.

Differences from Einstein gravity are minimal.

Abstract

We study the entropy of Schwarzschild black holes on DGP brane. The radius of event horizon on DGP brane is obtained by a numerical method. It is smaller than that of Einstein gravity in the conventional branch, and is larger in the accelerated branch. However, the difference is very small. The entropy of the black hole is calculated by using the improved brick-wall method.