Rotating Black Hole Thermodynamics with a Particle Probe

TL;DR

This paper investigates how particle absorption affects the thermodynamics of Myers-Perry black holes across various dimensions, revealing dimension-dependent behaviors and potential singularity avoidance.

Contribution

It provides a systematic analysis of black hole thermodynamics with particle probes in all dimensions, highlighting new behaviors in higher-dimensional black holes.

Findings

Entropy and irreducible mass changes depend on particle radial momentum.

4D Kerr black holes maintain properties after particle absorption.

5D black holes can avoid naked singularities through specific particle momenta.

Abstract

The thermodynamics of Myers-Perry black holes in general dimensions are studied using a particle probe. When undergoing particle absorption, the changes of the entropy and irreducible mass are shown to be dependent on the particle radial momentum. The black hole thermodynamic behaviors are dependent on dimensionality for specific rotations. For a 4-dimensional Kerr black hole, its black hole properties are maintained for any particle absorption. 5-dimensional black holes can avoid a naked ring singularity by absorbing a particle in specific momenta ranges. Black holes over 6 dimensions become ultra-spinning black holes through a specific form of particle absorption. The microscopical changes are interpreted in limited cases of Myers-Perry black holes using Kerr/CFT correspondence. We systematically describe the black hole properties changed by particle absorption in all dimensions.