Neutrino Quasinormal Modes of a Kerr-Newman-de Sitter Black Hole

TL;DR

This paper calculates the neutrino quasinormal modes of a Kerr-Newman-de Sitter black hole using the P"{o}shl-Teller approximation, revealing how certain parameters affect decay rates of perturbations.

Contribution

It provides the first analysis of neutrino QNMs in Kerr-Newman-de Sitter black holes using this approximation method.

Findings

Large cosmological constant leads to slower decay of neutrino perturbations.

Positive azimuthal quantum number m results in slower decay.

Small overtone number n correlates with slower decay.

Abstract

Using the P\"{o}shl-Teller approximation, we evaluate the neutrino quasinormal modes (QNMs) of a Kerr-Newman-de Sitter black hole. The result shows that for a Kerr-Newman-de Sitter black hole, massless neutrino perturbation of large $\Lambda$, positive $m$ and small value of $n$ will decay slowly.