(In)stability of black holes in the 4D Einstein-Gauss-Bonnet and Einstein-Lovelock gravities
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F47813059%3A19630%2F20%3AA0000007" target="_blank" >RIV/47813059:19630/20:A0000007 - isvavai.cz</a>
Result on the web
<a href="https://www.researchgate.net/publication/343528564_Instability_of_black_holes_in_the_4_D_Einstein-Gauss-Bonnet_and_Einstein-Lovelock_gravities" target="_blank" >https://www.researchgate.net/publication/343528564_Instability_of_black_holes_in_the_4_D_Einstein-Gauss-Bonnet_and_Einstein-Lovelock_gravities</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.dark.2020.100697" target="_blank" >10.1016/j.dark.2020.100697</a>
Alternative languages
Result language
angličtina
Original language name
(In)stability of black holes in the 4D Einstein-Gauss-Bonnet and Einstein-Lovelock gravities
Original language description
A (3 + 1)-dimensional Einstein-Gauss-Bonnet effective description of gravity has been recently formulated as the D -> 4 limit of the higher dimensional field equations after the rescaling of the coupling constant. This approach has been recently extended to the four-dimensional Einstein- Lovelock gravity. Although validity of the regularization procedure has not been shown for the general case, but only for a wide class of metrics, the black-hole solution obtained as a result of such a regularization is also an exact solution in the well defined 4D Einstein-Gauss-Bonnet theory suggested by Aoki et al. (2005) and in the scalar-tensor effective classical theories. Here we study the eikonal gravitational instability of asymptotically flat, de Sitter and anti-de Sitter black holes in the four dimensional Einstein-Gauss-Bonnet and Einstein-Lovelock theories. We find parametric regions of the eikonal instability for various orders of the Lovelock gravity, values of coupling and cosmological constants, and share the code which allows one to construct the instability region for an arbitrary set of parameters. For the four-dimensional Gauss-Bonnet black holes we obtain the region of stability in analytic form. Unlike the higher dimensional Einstein-Lovelock case, the eikonal instability serves as an effective cut-off of higher curvature Lovelock terms for the 4D black holes. (c) 2020 Elsevier B.V. All rights reserved.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10308 - Astronomy (including astrophysics,space science)
Result continuities
Project
<a href="/en/project/GA19-03950S" target="_blank" >GA19-03950S: Testing strong gravity via black holes</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
PHYSICS OF THE DARK UNIVERSE
ISSN
2212-6864
e-ISSN
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Volume of the periodical
30
Issue of the periodical within the volume
December 2020
Country of publishing house
NL - THE KINGDOM OF THE NETHERLANDS
Number of pages
7
Pages from-to
„100697-1“-„100697-7“
UT code for WoS article
000595916100029
EID of the result in the Scopus database
2-s2.0-85089236349