paper

Quasinormal frequencies of self-dual black holes

arXiv:1509.04306 · doi:10.1103/PhysRevD.93.084047

Abstract

One simplified black hole model constructed from a semiclassical analysis of loop quantum gravity (LQG) is called self-dual black hole. This black hole solution depends on a free dimensionless parameter P known as the polymeric parameter and also on the area related to the minimum area gap of LQG. In the limit of P and going to zero, the usual Schwarzschild-solution is recovered. Here we investigate the quasinormal modes (QNMs) of massless scalar perturbations in the self-dual black hole background. We compute the QN frequencies using the sixth order WKB approximation method and compare them with numerical solutions of the Regge-Wheeler equation. Our results show that as the parameter P grows, the real part of the QN frequencies suffers an initial increase and then starts to decrease while the magnitude of the imaginary one decreases for fixed area gap . This particular feature means that the damping of scalar perturbations in the self-dual black hole spacetimes are slower, and their oscillations are faster or slower according to the value of P.

17 pages, 5 figures. Some improvements with respect to the previous version. Final version to appear in Phys. Rev. D

References in corpus (6)

Cited by in corpus (40)