Reconstruction of energy conditions from observations and implications for extended theories of gravity
Autor(a) principal: | |
---|---|
Data de Publicação: | 2019 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
DOI: | 10.1140/epjc/s10052-019-6668-9 |
Texto Completo: | http://dx.doi.org/10.1140/epjc/s10052-019-6668-9 http://hdl.handle.net/11449/187398 |
Resumo: | The attempt to describe the recent accelerated expansion of the Universe includes different propositions for dark energy models and modified gravity theories. Establish their features in order to discriminate and even rule out part of these models using observational data is a fundamental issue of cosmology. In the present work we consider a class of extended theories of gravity (ETG) that are minimally coupled to the ordinary matter fields. In this context, and assuming a homogeneous and isotropic spacetime, we derive the energy conditions for this ETG class. We then put constraints on these conditions using a model-independent approach to reconstruct the deceleration function along with the Joint Light-curve Analysis (JLA) supernova sample, 11 baryon acoustic oscillation and 22 cosmic-chronometer measurements. We also consider an additional condition imposing the strong energy condition only on the ordinary matter. This is to guarantee the presence of only attractive matter in the energy–momentum tensor, at least in the redshift range of the observations, i.e., the recent accelerated expansion of the Universe is due solely to the modifications in the gravity theory. The main result of this work is a general reconstruction of the energy conditions valid for every considered ETG. |
id |
UNSP_c73ef926b6803e930379f8bab670feed |
---|---|
oai_identifier_str |
oai:repositorio.unesp.br:11449/187398 |
network_acronym_str |
UNSP |
network_name_str |
Repositório Institucional da UNESP |
repository_id_str |
2946 |
spelling |
Reconstruction of energy conditions from observations and implications for extended theories of gravityThe attempt to describe the recent accelerated expansion of the Universe includes different propositions for dark energy models and modified gravity theories. Establish their features in order to discriminate and even rule out part of these models using observational data is a fundamental issue of cosmology. In the present work we consider a class of extended theories of gravity (ETG) that are minimally coupled to the ordinary matter fields. In this context, and assuming a homogeneous and isotropic spacetime, we derive the energy conditions for this ETG class. We then put constraints on these conditions using a model-independent approach to reconstruct the deceleration function along with the Joint Light-curve Analysis (JLA) supernova sample, 11 baryon acoustic oscillation and 22 cosmic-chronometer measurements. We also consider an additional condition imposing the strong energy condition only on the ordinary matter. This is to guarantee the presence of only attractive matter in the energy–momentum tensor, at least in the redshift range of the observations, i.e., the recent accelerated expansion of the Universe is due solely to the modifications in the gravity theory. The main result of this work is a general reconstruction of the energy conditions valid for every considered ETG.Instituto de Física Universidade de Brasília, Caixa Postal 04455Laboratoire d’Annecy de Physique des Particules (LAPP) Université Savoie Mont Blanc CNRS/IN2P3Centre for Cosmology Particle Physics and Phenomenology Institute of Mathematics and Physics Louvain University, 2 Chemin du CyclotronInstitut d’Astrophysique de Paris GReCO UMR7095 CNRS, 98 bis boulevard AragoInstituto de Ciência e Tecnologia Universidade Estadual Paulista (UNESP)Divisão de Astrofísica Instituto Nacional de Pesquisas Espaciais, Av. dos Astronautas 1758Universidade do Estado do Rio Grande do NorteInstituto de Ciência e Tecnologia Universidade Estadual Paulista (UNESP)Universidade de Brasília (UnB)CNRS/IN2P3Louvain UniversityUMR7095 CNRSUniversidade Estadual Paulista (Unesp)Instituto Nacional de Pesquisas EspaciaisUniversidade do Estado do Rio Grande do NortePenna-Lima, M.Vitenti, S. D.P.Alves, M. E.S. [UNESP]de Araujo, J. C.N.Carvalho, F. C.2019-10-06T15:34:58Z2019-10-06T15:34:58Z2019-02-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1140/epjc/s10052-019-6668-9European Physical Journal C, v. 79, n. 2, 2019.1434-60521434-6044http://hdl.handle.net/11449/18739810.1140/epjc/s10052-019-6668-92-s2.0-85062158031Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengEuropean Physical Journal Cinfo:eu-repo/semantics/openAccess2021-10-23T05:09:27Zoai:repositorio.unesp.br:11449/187398Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T22:05:13.739744Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Reconstruction of energy conditions from observations and implications for extended theories of gravity |
title |
Reconstruction of energy conditions from observations and implications for extended theories of gravity |
spellingShingle |
Reconstruction of energy conditions from observations and implications for extended theories of gravity Reconstruction of energy conditions from observations and implications for extended theories of gravity Penna-Lima, M. Penna-Lima, M. |
title_short |
Reconstruction of energy conditions from observations and implications for extended theories of gravity |
title_full |
Reconstruction of energy conditions from observations and implications for extended theories of gravity |
title_fullStr |
Reconstruction of energy conditions from observations and implications for extended theories of gravity Reconstruction of energy conditions from observations and implications for extended theories of gravity |
title_full_unstemmed |
Reconstruction of energy conditions from observations and implications for extended theories of gravity Reconstruction of energy conditions from observations and implications for extended theories of gravity |
title_sort |
Reconstruction of energy conditions from observations and implications for extended theories of gravity |
author |
Penna-Lima, M. |
author_facet |
Penna-Lima, M. Penna-Lima, M. Vitenti, S. D.P. Alves, M. E.S. [UNESP] de Araujo, J. C.N. Carvalho, F. C. Vitenti, S. D.P. Alves, M. E.S. [UNESP] de Araujo, J. C.N. Carvalho, F. C. |
author_role |
author |
author2 |
Vitenti, S. D.P. Alves, M. E.S. [UNESP] de Araujo, J. C.N. Carvalho, F. C. |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
Universidade de Brasília (UnB) CNRS/IN2P3 Louvain University UMR7095 CNRS Universidade Estadual Paulista (Unesp) Instituto Nacional de Pesquisas Espaciais Universidade do Estado do Rio Grande do Norte |
dc.contributor.author.fl_str_mv |
Penna-Lima, M. Vitenti, S. D.P. Alves, M. E.S. [UNESP] de Araujo, J. C.N. Carvalho, F. C. |
description |
The attempt to describe the recent accelerated expansion of the Universe includes different propositions for dark energy models and modified gravity theories. Establish their features in order to discriminate and even rule out part of these models using observational data is a fundamental issue of cosmology. In the present work we consider a class of extended theories of gravity (ETG) that are minimally coupled to the ordinary matter fields. In this context, and assuming a homogeneous and isotropic spacetime, we derive the energy conditions for this ETG class. We then put constraints on these conditions using a model-independent approach to reconstruct the deceleration function along with the Joint Light-curve Analysis (JLA) supernova sample, 11 baryon acoustic oscillation and 22 cosmic-chronometer measurements. We also consider an additional condition imposing the strong energy condition only on the ordinary matter. This is to guarantee the presence of only attractive matter in the energy–momentum tensor, at least in the redshift range of the observations, i.e., the recent accelerated expansion of the Universe is due solely to the modifications in the gravity theory. The main result of this work is a general reconstruction of the energy conditions valid for every considered ETG. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019-10-06T15:34:58Z 2019-10-06T15:34:58Z 2019-02-01 |
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://dx.doi.org/10.1140/epjc/s10052-019-6668-9 European Physical Journal C, v. 79, n. 2, 2019. 1434-6052 1434-6044 http://hdl.handle.net/11449/187398 10.1140/epjc/s10052-019-6668-9 2-s2.0-85062158031 |
url |
http://dx.doi.org/10.1140/epjc/s10052-019-6668-9 http://hdl.handle.net/11449/187398 |
identifier_str_mv |
European Physical Journal C, v. 79, n. 2, 2019. 1434-6052 1434-6044 10.1140/epjc/s10052-019-6668-9 2-s2.0-85062158031 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
European Physical Journal C |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1822182589349232640 |
dc.identifier.doi.none.fl_str_mv |
10.1140/epjc/s10052-019-6668-9 |