Quasinormal spectrum in the asymptotically safe gravity

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F47813059%3A19630%2F23%3AA0000330" target="_blank" >RIV/47813059:19630/23:A0000330 - isvavai.cz</a>
Result on the web
<a href="https://proceedings.physics.cz/wp-content/uploads/2023/12/23_25_21_zin.pdf" target="_blank" >https://proceedings.physics.cz/wp-content/uploads/2023/12/23_25_21_zin.pdf</a>
DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Quasinormal spectrum in the asymptotically safe gravity
Original language description
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.
Czech name
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Czech description
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Project
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Continuities
S - Specificky vyzkum na vysokych skolach<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
Proceedings of RAGtime 23-25: Workshops on black holes and neutron stars
ISBN
9788075105776
ISSN
2336-5668
e-ISSN
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Number of pages
7
Pages from-to
205-211
Publisher name
Slezská univerzita v Opavě, Fyzikální ústav v Opavě
Place of publication
Opava
Event location
Opava
Event date
Nov 27, 2023
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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