D 2023

Quasinormal spectrum in the asymptotically safe gravity

ZINHAILO, Antonina Frantsivna

Basic information

Original name

Quasinormal spectrum in the asymptotically safe gravity

Authors

ZINHAILO, Antonina Frantsivna (804 Ukraine, guarantor, belonging to the institution)

Edition

Opava, Proceedings of RAGtime 23-25: Workshops on black holes and neutron stars, p. 205-211, 7 pp. 2023

Publisher

Slezská univerzita v Opavě, Fyzikální ústav v Opavě

Other information

Language

English

Type of outcome

Stať ve sborníku

Field of Study

10308 Astronomy

Country of publisher

Czech Republic

Confidentiality degree

není předmětem státního či obchodního tajemství

Publication form

printed version "print"

References:

RIV identification code

RIV/47813059:19630/23:A0000330

Organization unit

Institute of physics in Opava

ISBN

978-80-7510-577-6

ISSN

Keywords in English

asymptotically safe gravity; outburst of overtones; quasinormal modes; Regular spacetimes

Tags

International impact, Reviewed
Změněno: 29/2/2024 12:15, Mgr. Pavlína Jalůvková

Abstract

V originále

Asymptotically safe gravity is based on the idea of the dependence of the gravitational coupling upon the distance from the origin, approaching its classical value in the weak field regime. We consider three cases of identifying the cut-off parameter in the asymptotically safe gravity, leading to the three distinctive models for black holes. We find that the deviation of the fundamental mode from the Schwarzschild limit is a few per cent, in contrast to the higher overtones, where the deviation reaches hundreds of per cent, even when the fundamental mode almost coincides with the Schwarzschild mode. This behavior is connected with the fact that the quantum correction to the black hole spacetime is strong near the event horizon but quickly falls off with distance and is negligible near the peak of the effective potential surrounding the black hole.