Stability and phase transition of rotating Kaluza-Klein black holes

TL;DR

This paper explores the thermodynamics, stability, and quasinormal modes of rotating Kaluza-Klein black holes, revealing their phase transition behavior and decay properties through analytical and numerical methods.

Contribution

It provides a comprehensive analysis of thermodynamic stability and quasinormal modes of rotating Kaluza-Klein black holes, including new insights into phase transitions and decay rates.

Findings

First law of thermodynamics is satisfied for these black holes.

Identified stability criteria via heat capacity analysis.

Observed anomalous decay rates in quasinormal mode spectrum.

Abstract

In this paper, we investigate thermodynamics and phase transitions of a 4-dimensional rotating Kaluza-Klein black hole solution in the presence of Maxwell electrodynamics. Calculating the conserved and thermodynamical quantities shows that the first law of thermodynamics is satisfied. To find the stable black hole' s criteria, we check the stability in the canonical ensemble by analyzing the behavior of the heat capacity. We also consider a massive scalar perturbation minimally coupled to the background geometry of the 4-dimensional static Kaluza-Klein black hole and investigate the quasinormal modes by employing the WKB approximation. The anomalous decay rate of the quasinormal modes spectrum is investigated by using the sixth-order WKB formula and quasi-resonance modes of the black hole are studied with averaging of Pade approximations as well.