# Braneworld Black Holes and Entropy Bounds

## TL;DR

This paper examines the Bousso's D-bound entropy for black holes on a 4D brane, highlighting differences from standard solutions due to extra dimensions and discussing implications for black hole entropy bounds and quantum states.

## Contribution

It analyzes the D-bound entropy for brane-world black holes, revealing extra-dimensional effects and extending the discussion to quantum excited states of black holes.

## Key findings

- D-bound entropy differs from 4D black holes due to extra dimensions
- N-bound entropy holds for these brane-world solutions
- Results extended to black hole excited states using Bohr-like approach

## Abstract

The Bousso's D-bound entropy for the various possible black hole solutions on a 4-dimensional brane is checked. It is found that the D-bound entropy here is apparently different from that of obtained for the 4-dimensional black hole solutions. This difference is interpreted as the extra loss of information, associated to the extra dimension, when an extra-dimensional black hole is moved outward the observer's cosmological horizon. Also, it is discussed that N-bound entropy is hold for the possible solutions here. Finally, by adopting the recent Bohr-like approach to black hole quantum physics for the excited black holes, the obtained results are written also in terms of the black hole excited states.