2024
Asymptotic decay and quasinormal frequencies of scalar and Dirac fields around dilaton-de Sitter black holes
DUBINSKY, Alexey and Antonina Frantsivna ZINHAILOBasic information
Original name
Asymptotic decay and quasinormal frequencies of scalar and Dirac fields around dilaton-de Sitter black holes
Authors
DUBINSKY, Alexey and Antonina Frantsivna ZINHAILO (804 Ukraine, belonging to the institution)
Edition
European Physical Journal C, New York (USA), SPRINGER, 2024, 1434-6044
Other information
Language
English
Type of outcome
Article in a journal
Field of Study
10308 Astronomy
Country of publisher
United States of America
Confidentiality degree
is not subject to a state or trade secret
References:
Impact factor
Impact factor: 4.800
RIV identification code
RIV/47813059:19630/24:A0000380
Organization unit
Institute of physics in Opava
UT WoS
001296619600002
EID Scopus
2-s2.0-85201733891
Keywords in English
Asymptotic decay; Black holes; Dirac field; Exponentials; Field spectra; Fundamental modes; Quasinormal modes; Reasonable accuracy; Scalar fields; Spacetime
Tags
Changed: 27/1/2025 15:00, Mgr. Pavlína Jalůvková
Abstract
In the original language
We study the decay of Dirac and massive scalar fields at asymptotically late times in the background of the charged asymptotically de Sitter dilatonic black holes. It is shown that the asymptotic decay is exponential and oscillatory for large and intermediate mass of the field, while for zero and small mass it is pure exponential without oscillations. This reflects the dominance of quasinormal modes of the empty de Sitter spacetime at asymptotically late times. We also show that the earlier WKB calculation of the massive scalar field spectrum does not allow one to find the fundamental mode with reasonable accuracy.