Asymptotic quasinormal modes of scalar field in a gravity's rainbow

TL;DR

This paper investigates the asymptotic quasinormal modes of scalar fields in quantum-modified Schwarzschild black holes within gravity's rainbow, revealing energy-dependent effects and confirming Hod's conjecture.

Contribution

It introduces a method to compute asymptotic quasinormal frequencies considering energy functions from modified dispersion relations in gravity's rainbow.

Findings

Real parts of frequencies are proportional to Hawking temperature times ln 3

Area spacing is energy independent despite energy-dependent area

Barbero-Immirzi parameter remains unchanged from classical black hole analysis

Abstract

In the context of a gravity's rainbow, the asymptotic quasinormal modes of the scalar perturbation in the quantum modified Schwarzschild black holes are investigated. By using the monodromy method, we calculated and obtained the asymptotic quasinormal frequencies, which are dominated not only by the mass parameter of the spacetime, but also by the energy functions from the modified dispersion relations. However, the real parts of the asymptotic quasinormal modes is still $T_H\ln 3$, which is consistent with Hod's conjecture. In addition, for the quantum corrected black hole, the area spacing is calculated and the result is independent of the energy functions, in spite of the area itself is energy dependence. And that, by relating the area spectrum to loop quantum gravity, the Barbero-Immirzi parameter is given and it remains the same as from the usual black hole.