Junction conditions of Palatini f (R,T) gravity

We work out the junction conditions for the Palatini f(R, T) extension of general relativity, where f is an arbitrary function of the curvature scalar R of an independent connection, and of the trace T of the stress -energy tensor of the matter fields. We find such conditions on the allowed disconti...

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Detalhes bibliográficos
Autores: Rosa, Joao Luis, Rubiera García, Diego
Tipo de documento: artigo
Data de publicação:2022
País:España
Recursos:Universidad Complutense de Madrid (UCM)
Repositório:Docta Complutense
Idioma:inglês
OAI Identifier:oai:docta.ucm.es:20.500.14352/72571
Acesso em linha:https://hdl.handle.net/20.500.14352/72571
Access Level:Acceso aberto
Palavra-chave:51-73
Inflation
Wormholes
Stars
Física-Modelos matemáticos
Física matemática
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spelling Junction conditions of Palatini f (R,T) gravityRosa, Joao LuisRubiera García, Diego51-73InflationWormholesStarsFísica-Modelos matemáticosFísica matemáticaWe work out the junction conditions for the Palatini f(R, T) extension of general relativity, where f is an arbitrary function of the curvature scalar R of an independent connection, and of the trace T of the stress -energy tensor of the matter fields. We find such conditions on the allowed discontinuities of several geometrical and matter quantities, some of which depart from their metric counterparts, and in turn extend their Palatini f(R) versions via some new T-dependent terms. Moreover, we also identify some "exceptional cases " of f(R,T) Lagrangians such that some of these conditions can be discarded, thus allowing for further discontinuities in R and T and, in contrast with other theories of gravity, they are shown to not give rise to extra components in the matter sector, e.g., momentum fluxes and double gravitational layers. We discuss how these junction conditions, together with the nonconservation of the stress-energy tensor ascribed to these theories, may induce nontrivial changes in the shape of specific applications such as traversable thin-shell wormholes.Amer Physical SocUniversidad Complutense de Madrid20222022-11-0620222022-11-06journal articlehttp://purl.org/coar/resource_type/c_6501info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/20.500.14352/72571reponame:Docta Complutenseinstname:Universidad Complutense de Madrid (UCM)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:docta.ucm.es:20.500.14352/725712026-06-02T12:44:21Z
dc.title.none.fl_str_mv Junction conditions of Palatini f (R,T) gravity
title Junction conditions of Palatini f (R,T) gravity
spellingShingle Junction conditions of Palatini f (R,T) gravity
Rosa, Joao Luis
51-73
Inflation
Wormholes
Stars
Física-Modelos matemáticos
Física matemática
title_short Junction conditions of Palatini f (R,T) gravity
title_full Junction conditions of Palatini f (R,T) gravity
title_fullStr Junction conditions of Palatini f (R,T) gravity
title_full_unstemmed Junction conditions of Palatini f (R,T) gravity
title_sort Junction conditions of Palatini f (R,T) gravity
dc.creator.none.fl_str_mv Rosa, Joao Luis
Rubiera García, Diego
author Rosa, Joao Luis
author_facet Rosa, Joao Luis
Rubiera García, Diego
author_role author
author2 Rubiera García, Diego
author2_role author
dc.contributor.none.fl_str_mv Universidad Complutense de Madrid
dc.subject.none.fl_str_mv 51-73
Inflation
Wormholes
Stars
Física-Modelos matemáticos
Física matemática
topic 51-73
Inflation
Wormholes
Stars
Física-Modelos matemáticos
Física matemática
description We work out the junction conditions for the Palatini f(R, T) extension of general relativity, where f is an arbitrary function of the curvature scalar R of an independent connection, and of the trace T of the stress -energy tensor of the matter fields. We find such conditions on the allowed discontinuities of several geometrical and matter quantities, some of which depart from their metric counterparts, and in turn extend their Palatini f(R) versions via some new T-dependent terms. Moreover, we also identify some "exceptional cases " of f(R,T) Lagrangians such that some of these conditions can be discarded, thus allowing for further discontinuities in R and T and, in contrast with other theories of gravity, they are shown to not give rise to extra components in the matter sector, e.g., momentum fluxes and double gravitational layers. We discuss how these junction conditions, together with the nonconservation of the stress-energy tensor ascribed to these theories, may induce nontrivial changes in the shape of specific applications such as traversable thin-shell wormholes.
publishDate 2022
dc.date.none.fl_str_mv 2022
2022-11-06
2022
2022-11-06
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/20.500.14352/72571
url https://hdl.handle.net/20.500.14352/72571
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Amer Physical Soc
publisher.none.fl_str_mv Amer Physical Soc
dc.source.none.fl_str_mv reponame:Docta Complutense
instname:Universidad Complutense de Madrid (UCM)
instname_str Universidad Complutense de Madrid (UCM)
reponame_str Docta Complutense
collection Docta Complutense
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,301603

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