Superradiance of charged black holes in Einstein-Gauss-Bonnet gravity

In this paper we show that electrically charged black holes in Einstein-Gauss-Bonnet gravity suffer from a superradiant instability. It is triggered by a charged scalar field that fulfils Dirichlet boundary conditions at a mirror located outside the horizon. As in general relativity, the unstable mo...

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Detalles Bibliográficos
Autores principales: Fierro, Octavio, Grandi, Nicolás Esteban, Oliva, Julio
Formato: Articulo Preprint
Lenguaje:Inglés
Publicado: 2018
Materias:
Física
Electrically charged black holes
Einstein-Gauss-Bonnet
Superradiant instability
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/96732
https://ri.conicet.gov.ar/11336/95923
http://iopscience.iop.org/article/10.1088/1361-6382/aab3f6
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SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-96732
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Física
Electrically charged black holes
Einstein-Gauss-Bonnet
Superradiant instability
spellingShingle Física
Electrically charged black holes
Einstein-Gauss-Bonnet
Superradiant instability
Fierro, Octavio
Grandi, Nicolás Esteban
Oliva, Julio
Superradiance of charged black holes in Einstein-Gauss-Bonnet gravity
topic_facet Física
Electrically charged black holes
Einstein-Gauss-Bonnet
Superradiant instability
description In this paper we show that electrically charged black holes in Einstein-Gauss-Bonnet gravity suffer from a superradiant instability. It is triggered by a charged scalar field that fulfils Dirichlet boundary conditions at a mirror located outside the horizon. As in general relativity, the unstable modes exist provided that the mirror is located beyond a critical radius, making the instability a long wavelength one. We explore the effects of the Gauss-Bonnet corrections on the critical radius and find evidence that the critical radius decreases as the Gauss-Bonnet coupling α increases. Due to the, up to date, lack of an analytic rotating solution for Einstein-Gauss-Bonnet theory, this is the first example of a superradiant instability in the presence of higher curvature terms in the action.
format Articulo
Preprint
author Fierro, Octavio
Grandi, Nicolás Esteban
Oliva, Julio
author_facet Fierro, Octavio
Grandi, Nicolás Esteban
Oliva, Julio
author_sort Fierro, Octavio
title Superradiance of charged black holes in Einstein-Gauss-Bonnet gravity
title_short Superradiance of charged black holes in Einstein-Gauss-Bonnet gravity
title_full Superradiance of charged black holes in Einstein-Gauss-Bonnet gravity
title_fullStr Superradiance of charged black holes in Einstein-Gauss-Bonnet gravity
title_full_unstemmed Superradiance of charged black holes in Einstein-Gauss-Bonnet gravity
title_sort superradiance of charged black holes in einstein-gauss-bonnet gravity
publishDate 2018
url http://sedici.unlp.edu.ar/handle/10915/96732
https://ri.conicet.gov.ar/11336/95923
http://iopscience.iop.org/article/10.1088/1361-6382/aab3f6
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AT olivajulio superradianceofchargedblackholesineinsteingaussbonnetgravity
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