Correspondence between modified gravity and general relativity with scalar fields

Afonso, Victor I.; Olmo, Gonzalo J.; Orazi, Emanuele; Rubiera-Garcia, Diego

Correspondence between modified gravity and general relativity with scalar fields

Página do item simplificado Estatísticas

dc.contributor.author	Afonso, Victor I.
dc.contributor.author	Olmo, Gonzalo J.
dc.contributor.author	Orazi, Emanuele
dc.contributor.author	Rubiera-Garcia, Diego
dc.date.accessioned	2020-11-17T13:47:34Z
dc.date.available	2020-11-17T13:47:34Z
dc.date.issued	2019-02-20
dc.description.resumo	We describe a novel procedure to map the field equations of nonlinear Ricci-based metric-affine theories of gravity, coupled to scalar matter described by a given Lagrangian, into the field equations of general relativity coupled to a different scalar field Lagrangian. Our analysis considers examples with a single and N real scalar fields, described either by canonical Lagrangians or by generalized functions of the kinetic and potential terms. In particular, we consider several explicit examples involving f(R) theories and the Eddington-inspired Born Infeld gravity model, coupled to different scalar field Lagrangians. We show how the nonlinearities of the gravitational sector of these theories can be traded to nonlinearities in the matter fields and how the procedure allows to find new solutions on both sides of the correspondence. The potential of this procedure for applications of scalar field models in astrophysical and cosmological scenarios is highlighted	pt_BR
dc.identifier.citation	AFONSO, Victor I.; OLMO, Gonzalo J.; ORAZI, Emanuele; RUBIERA-GARCIA, Diego. Correspondence between modified gravity and general relativity with scalar fields. Physical Review D, [S.L.], v. 99, n. 4, p. 044040-044040, 20 fev. 2019. Disponível em: https://journals.aps.org/prd/abstract/10.1103/PhysRevD.99.044040. Acesso em: 08 set. 2020. http://dx.doi.org/10.1103/physrevd.99.044040.	pt_BR
dc.identifier.doi	10.1103/PhysRevD.99.044040
dc.identifier.issn	2470-0010
dc.identifier.issn	2470-0029
dc.identifier.uri	https://repositorio.ufrn.br/handle/123456789/30588
dc.language	en	pt_BR
dc.publisher	American Physical Society	pt_BR
dc.subject	Theories of gravity	pt_BR
dc.subject	Ricci-based metric-affine	pt_BR
dc.subject	Astrophysical	pt_BR
dc.subject	Cosmological	pt_BR
dc.title	Correspondence between modified gravity and general relativity with scalar fields	pt_BR
dc.type	article	pt_BR