ZINHAILO, Antonina Frantsivna. Quasinormal spectrum in the asymptotically safe gravity. In Proceedings of RAGtime 23-25: Workshops on black holes and neutron stars. Opava: Slezská univerzita v Opavě, Fyzikální ústav v Opavě, 2023, p. 205-211. ISBN 978-80-7510-577-6.
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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
Original language English
Type of outcome Proceedings paper
Field of Study 10308 Astronomy
Country of publisher Czech Republic
Confidentiality degree is not subject to a state or trade secret
Publication form printed version "print"
WWW URL
RIV identification code RIV/47813059:19630/23:A0000330
Organization unit Institute of physics in Opava
ISBN 978-80-7510-577-6
ISSN 2336-5668
Keywords in English asymptotically safe gravity; outburst of overtones; quasinormal modes; Regular spacetimes
Tags RIV24, SGS-30-2023, UF
Tags International impact, Reviewed
Changed by Changed by: Mgr. Pavlína Jalůvková, učo 25213. Changed: 29/2/2024 12:15.
Abstract
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.
PrintDisplayed: 7/8/2024 17:25