KONOPLYA, Roman and Olexandr ZHYDENKO. 4D Einstein-Lovelock black holes: Hierarchy of orders in curvature. Physics Letters B. 2020, vol. 807, August, p. "135607-1"-"135607-7", 7 pp. ISSN 0370-2693. Available from: https://dx.doi.org/10.1016/j.physletb.2020.135607.
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Basic information
Original name 4D Einstein-Lovelock black holes: Hierarchy of orders in curvature
Authors KONOPLYA, Roman (804 Ukraine, belonging to the institution) and Olexandr ZHYDENKO (804 Ukraine, belonging to the institution).
Edition Physics Letters B, 2020, 0370-2693.
Other information
Original language English
Type of outcome Article in a journal
Field of Study 10308 Astronomy
Country of publisher Netherlands
Confidentiality degree is not subject to a state or trade secret
WWW URL
RIV identification code RIV/47813059:19630/20:A0000017
Organization unit Institute of physics in Opava
Doi http://dx.doi.org/10.1016/j.physletb.2020.135607
UT WoS 000571765700074
Keywords in English NORMAL-MODES
Tags FÚ, FÚ2020, GA19-03950S, RIV21
Tags International impact, Reviewed
Links GA19-03950S, research and development project.
Changed by Changed by: Mgr. Pavlína Jalůvková, učo 25213. Changed: 19/4/2021 22:12.
Abstract
The Einstein-Lovelock theory contains an infinite series of corrections to the Einstein term with an increasing power of the curvature. It is well-known that for large black holes the lowest (Gauss-Bonnet) term is the dominant one, while for smaller black holes higher curvature corrections become important. We will show that if one is limited by positive values of the coupling constants, then the dynamical instability of black holes serves as an effective cut-off of influence of higher curvature corrections in the 4D Einstein-Lovelock approach: the higher is the order of the Lovelock term, the smaller is the maximal value of the coupling constant allowing for stability, so that effectively only a first few orders can deform the observable values seemingly. For negative values of coupling constants this is not so, and, despite some suppression of higher order terms also occurs due to the decreasing threshold values of the coupling constant, this does not lead to an noticeable opportunity to neglect higher order corrections. In the case a lot of orders of Lovelock theory are taken into account, so that the black-hole solution depends on a great number of coupling constants, we propose a compact description of it in terms of only two or three parameters encoding all the observable values.
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