Correspondence between modified gravity and general relativity with scalar fields

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 example...

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Principais autores:	Afonso, Victor I., Olmo, Gonzalo J., Orazi, Emanuele, Rubiera-Garcia, Diego
Formato:	article
Idioma:	English
Publicado em:	American Physical Society
Assuntos:	Theories of gravity Ricci-based metric-affine Astrophysical Cosmological
Endereço do item:	https://repositorio.ufrn.br/handle/123456789/30588
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id	ri-123456789-30588
record_format	dspace
spelling	ri-123456789-305882023-02-15T20:55:15Z Correspondence between modified gravity and general relativity with scalar fields Afonso, Victor I. Olmo, Gonzalo J. Orazi, Emanuele Rubiera-Garcia, Diego Theories of gravity Ricci-based metric-affine Astrophysical Cosmological 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 2020-11-17T13:47:34Z 2020-11-17T13:47:34Z 2019-02-20 article 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. 2470-0010 2470-0029 https://repositorio.ufrn.br/handle/123456789/30588 10.1103/PhysRevD.99.044040 en application/pdf American Physical Society
institution	Repositório Institucional
collection	RI - UFRN
language	English
topic	Theories of gravity Ricci-based metric-affine Astrophysical Cosmological
spellingShingle	Theories of gravity Ricci-based metric-affine Astrophysical Cosmological Afonso, Victor I. Olmo, Gonzalo J. Orazi, Emanuele Rubiera-Garcia, Diego Correspondence between modified gravity and general relativity with scalar fields
description	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
format	article
author	Afonso, Victor I. Olmo, Gonzalo J. Orazi, Emanuele Rubiera-Garcia, Diego
author_facet	Afonso, Victor I. Olmo, Gonzalo J. Orazi, Emanuele Rubiera-Garcia, Diego
author_sort	Afonso, Victor I.
title	Correspondence between modified gravity and general relativity with scalar fields
title_short	Correspondence between modified gravity and general relativity with scalar fields
title_full	Correspondence between modified gravity and general relativity with scalar fields
title_fullStr	Correspondence between modified gravity and general relativity with scalar fields
title_full_unstemmed	Correspondence between modified gravity and general relativity with scalar fields
title_sort	correspondence between modified gravity and general relativity with scalar fields
publisher	American Physical Society
publishDate	2020
url	https://repositorio.ufrn.br/handle/123456789/30588
work_keys_str_mv	AT afonsovictori correspondencebetweenmodifiedgravityandgeneralrelativitywithscalarfields AT olmogonzaloj correspondencebetweenmodifiedgravityandgeneralrelativitywithscalarfields AT oraziemanuele correspondencebetweenmodifiedgravityandgeneralrelativitywithscalarfields AT rubieragarciadiego correspondencebetweenmodifiedgravityandgeneralrelativitywithscalarfields
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Correspondence between modified gravity and general relativity with scalar fields

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