Quasinormal Modes of Asymptotically (A)dS Black Hole in Lovelock Background
N. Abbasvandi, M. J. Soleimani, Shahidan Radiman, W.A.T. Wan Abdullah
TL;DR
This paper investigates the quasinormal modes of massless scalar fields in asymptotically (A)dS black holes within Lovelock gravity, analyzing how Lovelock couplings and the cosmological constant influence the frequency spectrum using a sixth-order WKB method.
Contribution
It introduces a detailed analysis of quasinormal modes in Lovelock black holes considering higher-order couplings and the cosmological constant, employing a sixth-order WKB approximation.
Findings
Lovelock coupling constants significantly affect quasinormal frequencies.
The cosmological constant influences the damping and oscillation modes.
Higher-order WKB provides accurate frequency estimations.
Abstract
We study the quasinormal modes of the massless scalar field in asymptotically (A)dS black holes in Lovelock spacetime by using the sixth order of the WKB approximation. We consider the effects of the second and third order of Lovelock coupling constants on quasinormal frequencies spectrum as well as cosmological constant.
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