Quasinormal Modes of a Charged Black Hole with Scalar Hair-Reference-Cited by-同舟云学术

Quasinormal Modes of a Charged Black Hole with Scalar Hair

Published:2023-07-03 Issue:7 Volume:9 Page:320
ISSN:2218-1997
Container-title:Universe
language:en
Short-container-title:Universe

Author:

Guo Wen-Di¹²^ORCID,Tan Qin¹²

Affiliation:

1. Lanzhou Center for Theoretical Physics, Key Laboratory of Theoretical Physics of Gansu Province, School of Physical Science and Technology, Lanzhou University, Lanzhou 730000, China

2. Institute of Theoretical Physics, Research Center of Gravitation, Lanzhou University, Lanzhou 730000, China

Abstract

Based on the five-dimensional Einstein–Maxwell theory, Bah et al. constructed a singularity-free topology star/black hole [Phys. Rev. Lett. 126, 151101 (2021)]. After performing the Kaluza–Klein reduction, i.e., integrating the extra space dimension, it can obtain an effective four-dimensional spherically static charged black hole with scalar hair. In this paper, we study the quasinormal modes (QNMs) of the scalar, electromagnetic, and gravitational fields in the background of this effective four-dimensional charged black hole. The radial parts of the perturbed fields all satisfy a Schrödinger-like equation. Using the asymptotic iteration method, we obtain the QNM frequencies semianalytically. For low-overtone QNMs, the results obtained using both the asymptotic iteration method and the Wentzel–Kramers–Brillouin approximation method agree well. In the null coordinates, the evolution of a Gaussian package is also studied. The QNM frequencies obtained by fitting the evolution data also agree well with the results obtained using the asymptotic iteration method.

Funder

National Key Research and Development Program of China

National Natural Science Foundation of China

China Postdoctoral Science Foundation

111 Project

Lanzhou City’s scientific research funding subsidy to Lanzhou University

Publisher

MDPI AG

Subject

General Physics and Astronomy

Link

https://www.mdpi.com/2218-1997/9/7/320/pdf

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