(In)stability of black holes in the 4D Einstein-Gauss-Bonnet and Einstein-Lovelock gravities

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

(In)stability of black holes in the 4D Einstein-Gauss-Bonnet and Einstein-Lovelock gravities

Popis výsledku v původním jazyce

A (3 + 1)-dimensional Einstein-Gauss-Bonnet effective description of gravity has been recently formulated as the D -&gt; 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.

Název v anglickém jazyce

(In)stability of black holes in the 4D Einstein-Gauss-Bonnet and Einstein-Lovelock gravities

Popis výsledku anglicky

A (3 + 1)-dimensional Einstein-Gauss-Bonnet effective description of gravity has been recently formulated as the D -&gt; 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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10308 - Astronomy (including astrophysics,space science)

Projekt

<a href="/cs/project/GA19-03950S" target="_blank" >GA19-03950S: Testování silné gravitace prostřednictvím černých děr</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2020

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

PHYSICS OF THE DARK UNIVERSE

ISSN

2212-6864

e-ISSN

—

Svazek periodika

30

Číslo periodika v rámci svazku

December 2020

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

7

Strana od-do

„100697-1“-„100697-7“

Kód UT WoS článku

000595916100029

EID výsledku v databázi Scopus

2-s2.0-85089236349