Instability of Rotating Anti-de Sitter Black Holes

TL;DR

This paper investigates the stability of higher-dimensional rotating anti-de Sitter black holes by analyzing their fragmentation at high angular momentum, establishing bounds on their parameters for stability.

Contribution

It introduces a numerical method to determine the stability bounds of AdS black holes based on their angular momentum and cosmological constant.

Findings

Black holes become unstable and fragment when rotating too fast.

Stable parameter ranges depend on dimension, angular momentum, and cosmological constant.

Numerical bounds for stability are established for various dimensions.

Abstract

We study the instability of higher-dimensional rotating anti-de Sitter black holes through fragmentation. Fragmentation occurs when black holes rotate too fast to sustain their horizon, and then the black holes are broken into small pieces. Using this process, we test the stability of AdS black holes and discover the dynamical upper bounds of the angular momentum and the cosmological constant. We show that AdS black holes can exist stably within limited parameter ranges in the general dimensions. The parameter ranges are obtained numerically in terms of angular momentum and cosmological constant.