Quantum Aspects of Black Hole Entropy

TL;DR

This paper reviews recent quantum approaches to black hole entropy, focusing on quantum corrections, holographic bounds, and supersymmetric black holes within various theoretical frameworks.

Contribution

It provides a comprehensive survey of quantum corrections to black hole entropy beyond semiclassical methods, including quantum geometry and string theory insights.

Findings

Quantum corrections modify the Bekenstein-Hawking entropy law.

Holographic entropy bounds are affected by quantum effects.

Supersymmetric extremal black holes are briefly analyzed within string theory.

Abstract

This survey intends to cover recent approaches to black hole entropy which attempt to go beyond the standard semiclassical perspective. Quantum corrections to the semiclassical Bekenstein-Hawking area law for black hole entropy, obtained within the quantum geometry framework, are treated in some detail. Their ramification for the holographic entropy bound for bounded stationary spacetimes is discussed. Four dimensional supersymmetric extremal black holes in string-based N=2 supergravity are also discussed, albeit more briefly.