J 2023

Bardeen spacetime as a quantum corrected Schwarzschild black hole: Quasinormal modes and Hawking radiation

KONOPLYA, Roman, Dmitriy OVCHINNIKOV and Bobomurat AHMEDOV

Basic information

Original name

Bardeen spacetime as a quantum corrected Schwarzschild black hole: Quasinormal modes and Hawking radiation

Authors

KONOPLYA, Roman (804 Ukraine, belonging to the institution), Dmitriy OVCHINNIKOV (860 Uzbekistan, belonging to the institution) and Bobomurat AHMEDOV (860 Uzbekistan)

Edition

Physical Review D, 2023, 2470-0010

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10308 Astronomy

Country of publisher

United States of America

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

RIV identification code

RIV/47813059:19630/23:A0000304

Organization unit

Institute of physics in Opava

UT WoS

001119015500007

Keywords in English

Bardeen black hole; Schwarzschild solution;quasinormal modes;Hawking radiation

Tags

International impact, Reviewed
Změněno: 29/2/2024 12:04, Mgr. Pavlína Jalůvková

Abstract

V originále

The Bardeen black hole holds historical significance as the first model of a regular black hole. Recently, there have been proposed interpretations of the Bardeen spacetime as quantum corrections to the Schwarzschild solution. Our study focuses on investigating the quasinormal modes and Hawking radiation of the Bardeen black hole. We have observed that previous studies on the quasinormal modes for the Bardeen black hole suffer from inaccuracies that cannot be neglected. Therefore, we propose accurate calculations of the quasinormal modes for scalar, electromagnetic, and neutrino fields in the Bardeen spacetime. Additionally, we have computed the gray-body factors and analyzed the emission rates of Hawking radiation. Even when the quantum correction is small and the fundamental mode only slightly differs from its Schwarzschild value, the first several overtones deviate at an increasingly stronger rate. This deviation leads to the appearance of overtones with very small real oscillation frequencies. This outburst of overtones is closely linked to the fact that the quantum-corrected black hole differs from its classical limit primarily near the event horizon. Moreover, the intensity of the Hawking radiation is significantly suppressed (up to 3 orders of magnitude) by the quantum correction.