Einstein-Maxwell-scalar black holes: classes of solutions, dyons and extremality

Detalhes bibliográficos
Autor(a) principal: Astefanesei, D.
Data de Publicação: 2019
Outros Autores: Herdeiro, C., Pombo, A., Radu, E.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10773/27050
Resumo: Spherical black hole (BH) solutions in Einstein-Maxwell-scalar (EMS) models wherein the scalar field is non-minimally coupled to the Maxwell invariant by some coupling function are discussed. We suggest a classification for these models into two classes, based on the properties of the coupling function, which, in particular, allow, or not, the ReissnerNordstr¨om (RN) BH solution of electrovacuum to solve a given model. Then, a comparative analysis of two illustrative families of solutions, one belonging to each class is performed: dilatonic versus scalarised BHs. By including magnetic charge, that is considering dyons, we show that scalarised BHs can have a smooth extremal limit, unlike purely electric or magnetic solutions. In particular, we study this extremal limit using the entropy function formalism, which provides insight on why both charges are necessary for extremal solutions to exist.
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spelling Einstein-Maxwell-scalar black holes: classes of solutions, dyons and extremalityBlack holesClassical theories of gravityScalarizationDyonsSpherical black hole (BH) solutions in Einstein-Maxwell-scalar (EMS) models wherein the scalar field is non-minimally coupled to the Maxwell invariant by some coupling function are discussed. We suggest a classification for these models into two classes, based on the properties of the coupling function, which, in particular, allow, or not, the ReissnerNordstr¨om (RN) BH solution of electrovacuum to solve a given model. Then, a comparative analysis of two illustrative families of solutions, one belonging to each class is performed: dilatonic versus scalarised BHs. By including magnetic charge, that is considering dyons, we show that scalarised BHs can have a smooth extremal limit, unlike purely electric or magnetic solutions. In particular, we study this extremal limit using the entropy function formalism, which provides insight on why both charges are necessary for extremal solutions to exist.Springer Verlag2019-11-27T11:08:16Z2019-10-07T00:00:00Z2019-10-07info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10773/27050eng1126-670810.1007/JHEP10(2019)078Astefanesei, D.Herdeiro, C.Pombo, A.Radu, E.info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-02-22T11:52:24Zoai:ria.ua.pt:10773/27050Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T02:59:55.164211Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Einstein-Maxwell-scalar black holes: classes of solutions, dyons and extremality
title Einstein-Maxwell-scalar black holes: classes of solutions, dyons and extremality
spellingShingle Einstein-Maxwell-scalar black holes: classes of solutions, dyons and extremality
Astefanesei, D.
Black holes
Classical theories of gravity
Scalarization
Dyons
title_short Einstein-Maxwell-scalar black holes: classes of solutions, dyons and extremality
title_full Einstein-Maxwell-scalar black holes: classes of solutions, dyons and extremality
title_fullStr Einstein-Maxwell-scalar black holes: classes of solutions, dyons and extremality
title_full_unstemmed Einstein-Maxwell-scalar black holes: classes of solutions, dyons and extremality
title_sort Einstein-Maxwell-scalar black holes: classes of solutions, dyons and extremality
author Astefanesei, D.
author_facet Astefanesei, D.
Herdeiro, C.
Pombo, A.
Radu, E.
author_role author
author2 Herdeiro, C.
Pombo, A.
Radu, E.
author2_role author
author
author
dc.contributor.author.fl_str_mv Astefanesei, D.
Herdeiro, C.
Pombo, A.
Radu, E.
dc.subject.por.fl_str_mv Black holes
Classical theories of gravity
Scalarization
Dyons
topic Black holes
Classical theories of gravity
Scalarization
Dyons
description Spherical black hole (BH) solutions in Einstein-Maxwell-scalar (EMS) models wherein the scalar field is non-minimally coupled to the Maxwell invariant by some coupling function are discussed. We suggest a classification for these models into two classes, based on the properties of the coupling function, which, in particular, allow, or not, the ReissnerNordstr¨om (RN) BH solution of electrovacuum to solve a given model. Then, a comparative analysis of two illustrative families of solutions, one belonging to each class is performed: dilatonic versus scalarised BHs. By including magnetic charge, that is considering dyons, we show that scalarised BHs can have a smooth extremal limit, unlike purely electric or magnetic solutions. In particular, we study this extremal limit using the entropy function formalism, which provides insight on why both charges are necessary for extremal solutions to exist.
publishDate 2019
dc.date.none.fl_str_mv 2019-11-27T11:08:16Z
2019-10-07T00:00:00Z
2019-10-07
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10773/27050
url http://hdl.handle.net/10773/27050
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 1126-6708
10.1007/JHEP10(2019)078
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Springer Verlag
publisher.none.fl_str_mv Springer Verlag
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
institution RCAAP
reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
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