Modified gravity/dynamical dark energy vs ΛCDM: is the game over?

Over the last decades, tests on the standard model of cosmology, the so-called ΛCDM model, have been widely analysed and compared with many different models for describing dark energy. Modified gravities have played an important role in this sense as an alternative to ΛCDM model. Previous observatio...

Descripción completa

Detalles Bibliográficos
Autores: Odintsov, Sergei D., Sáez-Gómez, Diego, Sharov, German S.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2025
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/392584
Acceso en línea:http://hdl.handle.net/10261/392584
https://api.elsevier.com/content/abstract/scopus_id/105000342816
Access Level:acceso abierto
id ES_f5ff6f48081f87e72f3ecc8f02db8a44
oai_identifier_str oai:digital.csic.es:10261/392584
network_acronym_str ES
network_name_str España
repository_id_str
spelling Modified gravity/dynamical dark energy vs ΛCDM: is the game over?Odintsov, Sergei D.Sáez-Gómez, DiegoSharov, German S.Over the last decades, tests on the standard model of cosmology, the so-called ΛCDM model, have been widely analysed and compared with many different models for describing dark energy. Modified gravities have played an important role in this sense as an alternative to ΛCDM model. Previous observational data has been always favouring ΛCDM model in comparison to any other model. While statistically speaking, alternative models have shown their power, fitting in some cases the observational data slightly better than ΛCDM, the significance and goodness of the fits were not significantly relevant to exclude the standard model of cosmology. In this paper, a generalisation of exponential F(R) gravity is considered and compared with ΛCDM model by using the latest observational data. Also some well-known model independent parameterisations for the equation of state (EoS) of dark energy are explored. These scenarios are confronted with the renewed observational data involving the Pantheon plus datasets of supernovae type Ia, the Hubble parameter estimations, data from the cosmic microwave background and baryon acoustic oscillations, where the latter includes the data provided by Dark Energy Spectroscopic Instrument Collaboration. Results of this analysis suggest that standard exponential F(R) models provide much better fits than ΛCDM model, which is excluded at 4σ. Moreover, the parameterisations of the equation of state suggest a non-constant EoS parameter for dark energy, where ΛCDM model is also excluded at 4σ.This work was supported by MICINN (Spain) project PID2020-117301GA-I00 (D.S.G.) funded by MCIN/AEI/10.13039/501100011033 (“ERDF A way of making Europe” and “PGC Generación de Conocimiento”) and also by the program Unidad de Excelencia Maria de Maeztu CEX2020-001058-M, Spain (S.D.O).Financial support of the Department of Education, Junta de Castilla y León (Spain), and FEDER Funds is also gratefully acknowledged (Reference: CLU-2023-1-05).With funding from the Spanish government through the "María de Maeztu Unit of Excellence" accreditation (CEX2020-001058-M)Peer reviewedSpringer NatureMinisterio de Ciencia e Innovación (España)Agencia Estatal de Investigación (España)European CommissionJunta de Castilla y LeónOdintsov, Sergei D. [0000-0002-3529-7030]Sáez-Gómez, Diego [0000-0002-0714-2680]Sharov, German S. [0000-0002-5723-6618]Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202520252025info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://hdl.handle.net/10261/392584https://api.elsevier.com/content/abstract/scopus_id/105000342816reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2020-117301GA-I00info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/CEX2020-001058-Mhttps://doi.org/10.1140/epjc/s10052-025-14013-3Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3925842026-05-22T06:33:51Z
dc.title.none.fl_str_mv Modified gravity/dynamical dark energy vs ΛCDM: is the game over?
title Modified gravity/dynamical dark energy vs ΛCDM: is the game over?
spellingShingle Modified gravity/dynamical dark energy vs ΛCDM: is the game over?
Odintsov, Sergei D.
title_short Modified gravity/dynamical dark energy vs ΛCDM: is the game over?
title_full Modified gravity/dynamical dark energy vs ΛCDM: is the game over?
title_fullStr Modified gravity/dynamical dark energy vs ΛCDM: is the game over?
title_full_unstemmed Modified gravity/dynamical dark energy vs ΛCDM: is the game over?
title_sort Modified gravity/dynamical dark energy vs ΛCDM: is the game over?
dc.creator.none.fl_str_mv Odintsov, Sergei D.
Sáez-Gómez, Diego
Sharov, German S.
author Odintsov, Sergei D.
author_facet Odintsov, Sergei D.
Sáez-Gómez, Diego
Sharov, German S.
author_role author
author2 Sáez-Gómez, Diego
Sharov, German S.
author2_role author
author
dc.contributor.none.fl_str_mv Ministerio de Ciencia e Innovación (España)
Agencia Estatal de Investigación (España)
European Commission
Junta de Castilla y León
Odintsov, Sergei D. [0000-0002-3529-7030]
Sáez-Gómez, Diego [0000-0002-0714-2680]
Sharov, German S. [0000-0002-5723-6618]
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
description Over the last decades, tests on the standard model of cosmology, the so-called ΛCDM model, have been widely analysed and compared with many different models for describing dark energy. Modified gravities have played an important role in this sense as an alternative to ΛCDM model. Previous observational data has been always favouring ΛCDM model in comparison to any other model. While statistically speaking, alternative models have shown their power, fitting in some cases the observational data slightly better than ΛCDM, the significance and goodness of the fits were not significantly relevant to exclude the standard model of cosmology. In this paper, a generalisation of exponential F(R) gravity is considered and compared with ΛCDM model by using the latest observational data. Also some well-known model independent parameterisations for the equation of state (EoS) of dark energy are explored. These scenarios are confronted with the renewed observational data involving the Pantheon plus datasets of supernovae type Ia, the Hubble parameter estimations, data from the cosmic microwave background and baryon acoustic oscillations, where the latter includes the data provided by Dark Energy Spectroscopic Instrument Collaboration. Results of this analysis suggest that standard exponential F(R) models provide much better fits than ΛCDM model, which is excluded at 4σ. Moreover, the parameterisations of the equation of state suggest a non-constant EoS parameter for dark energy, where ΛCDM model is also excluded at 4σ.
publishDate 2025
dc.date.none.fl_str_mv 2025
2025
2025
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Publisher's version
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/392584
https://api.elsevier.com/content/abstract/scopus_id/105000342816
url http://hdl.handle.net/10261/392584
https://api.elsevier.com/content/abstract/scopus_id/105000342816
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv #PLACEHOLDER_PARENT_METADATA_VALUE#
#PLACEHOLDER_PARENT_METADATA_VALUE#
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2020-117301GA-I00
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/CEX2020-001058-M
https://doi.org/10.1140/epjc/s10052-025-14013-3
Sí
dc.rights.none.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 Nature
publisher.none.fl_str_mv Springer Nature
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869424694438920192
score 15.812429

Similares en LA Referencia