Scalar Perturbations of a Single-Horizon Regular Black Hole
arXiv:2009.02367 · doi:10.1103/PhysRevD.102.104040
Abstract
We investigate the massless scalar field perturbations, including the quasinormal mode spectrum and the ringdown waveform, of a regular black hole spacetime that was derived via the Loop Quantum Gravity inspired polymer quantization of spherical D black holes. In contrast to most, if not all, of the other regular black holes considered in the literature, the resulting nonsingular spacetime has a single bifurcative horizon and hence no mass inflation. In the interior, the areal radius decreases to a minimum given by the Polymerization constant, , and then re-expands into a Kantowski-Sachs universe. We find indications that this black hole model is stable against small scalar perturbations. We also show that an increase in the magnitude of will decrease the height of the QNM potential and gives oscillations with lower frequency and less damping.
arXiv comment17 pages, 14 figures, accepted for publication in PRD
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