Modified cosmology through generalized mass-to-horizon entropy: observational constraints from DESI DR2 BAO data

A generalized mass-to-horizon entropy has recently been proposed as an extension of the Bekenstein-Hawking area law, derived from a modified mass-horizon relation constructed to ensure consistency with the Clausius equation. Within the gravity-thermodynamics conjecture, this entropy formulation yiel...

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Autores: Luciano, Giuseppe Gaetano, Paliathanasis, Andronikos
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2025
País:España
Institución:Universitat de Lleida (UdL)
Repositorio:Repositori Obert UdL
OAI Identifier:oai:repositori.udl.cat:10459.1/469737
Acceso en línea:https://doi.org/10.1016/j.physletb.2025.139954
https://hdl.handle.net/10459.1/469737
Access Level:acceso abierto
Palabra clave:Gravitys
Generalized entropy
Dark energy
Cosmology
DESI DR2 BAO
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spelling Modified cosmology through generalized mass-to-horizon entropy: observational constraints from DESI DR2 BAO dataLuciano, Giuseppe GaetanoPaliathanasis, AndronikosGravitysGeneralized entropyDark energyCosmologyDESI DR2 BAOA generalized mass-to-horizon entropy has recently been proposed as an extension of the Bekenstein-Hawking area law, derived from a modified mass-horizon relation constructed to ensure consistency with the Clausius equation. Within the gravity-thermodynamics conjecture, this entropy formulation yields modified Friedmann equations, which recover the standard CDM cosmology in the appropriate limit of the model’s two free parameters. In the present study, we constrain this framework using observations from Type Ia supernovae (SNIa), cosmic chronometers (CC) and baryon acoustic oscillations (BAO), including the Second Data Release of the Dark Energy Spectroscopic Instrument (DESI DR2) survey, together with the Supernovae for the Equation of State (SH0ES) distance–ladder prior, across four combinations of data sets. Although the extended entropic scenario yields a slightly better, or statistically comparable, fit to the data, model selection via the Akaike Information Criterion (AIC) mildly favors the cosmological constant as the dark energy candidate. Moreover, the CDM limit lies within of our constraints, indicating no significant deviation from standard cosmology with current data.GGL would like to thank Prof. Gamze for her warm inspiration. The research of GGL is supported by the Ayuda Postdoctoral of the Univer- sity of Lleida (project code: X25027). GGL gratefully acknowledges the contribution of the LISA Cosmology Working Group (CosWG), as well as support from the COST Actions CA21136 - Addressing observational ten- sions in cosmology with systematics and fundamental physics (CosmoVerse) - CA23130, Bridging high and low energies in search of quantum gravity (BridgeQG) and CA21106 - COSMIC WISPers in the Dark Universe: The- ory, astrophysics and experiments (CosmicWISPers). AP was Financially supported by FONDECYT 1240514 ETAPA 2025.Elsevier2025info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttps://doi.org/10.1016/j.physletb.2025.139954https://hdl.handle.net/10459.1/469737reponame:Repositori Obert UdL instname:Universitat de Lleida (UdL)InglésReproducció del document publicat a https://doi.org/10.1016/j.physletb.2025.139954Physics Letters B, 2025, vol. 870, núm. 139954, p. 1-8cc-by (c) Luciano et al., 2025Attribution 4.0 Internationalinfo:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/4.0/oai:repositori.udl.cat:10459.1/4697372026-06-24T12:42:17Z
dc.title.none.fl_str_mv Modified cosmology through generalized mass-to-horizon entropy: observational constraints from DESI DR2 BAO data
title Modified cosmology through generalized mass-to-horizon entropy: observational constraints from DESI DR2 BAO data
spellingShingle Modified cosmology through generalized mass-to-horizon entropy: observational constraints from DESI DR2 BAO data
Luciano, Giuseppe Gaetano
Gravitys
Generalized entropy
Dark energy
Cosmology
DESI DR2 BAO
title_short Modified cosmology through generalized mass-to-horizon entropy: observational constraints from DESI DR2 BAO data
title_full Modified cosmology through generalized mass-to-horizon entropy: observational constraints from DESI DR2 BAO data
title_fullStr Modified cosmology through generalized mass-to-horizon entropy: observational constraints from DESI DR2 BAO data
title_full_unstemmed Modified cosmology through generalized mass-to-horizon entropy: observational constraints from DESI DR2 BAO data
title_sort Modified cosmology through generalized mass-to-horizon entropy: observational constraints from DESI DR2 BAO data
dc.creator.none.fl_str_mv Luciano, Giuseppe Gaetano
Paliathanasis, Andronikos
author Luciano, Giuseppe Gaetano
author_facet Luciano, Giuseppe Gaetano
Paliathanasis, Andronikos
author_role author
author2 Paliathanasis, Andronikos
author2_role author
dc.subject.none.fl_str_mv Gravitys
Generalized entropy
Dark energy
Cosmology
DESI DR2 BAO
topic Gravitys
Generalized entropy
Dark energy
Cosmology
DESI DR2 BAO
description A generalized mass-to-horizon entropy has recently been proposed as an extension of the Bekenstein-Hawking area law, derived from a modified mass-horizon relation constructed to ensure consistency with the Clausius equation. Within the gravity-thermodynamics conjecture, this entropy formulation yields modified Friedmann equations, which recover the standard CDM cosmology in the appropriate limit of the model’s two free parameters. In the present study, we constrain this framework using observations from Type Ia supernovae (SNIa), cosmic chronometers (CC) and baryon acoustic oscillations (BAO), including the Second Data Release of the Dark Energy Spectroscopic Instrument (DESI DR2) survey, together with the Supernovae for the Equation of State (SH0ES) distance–ladder prior, across four combinations of data sets. Although the extended entropic scenario yields a slightly better, or statistically comparable, fit to the data, model selection via the Akaike Information Criterion (AIC) mildly favors the cosmological constant as the dark energy candidate. Moreover, the CDM limit lies within of our constraints, indicating no significant deviation from standard cosmology with current data.
publishDate 2025
dc.date.none.fl_str_mv 2025
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://doi.org/10.1016/j.physletb.2025.139954
https://hdl.handle.net/10459.1/469737
url https://doi.org/10.1016/j.physletb.2025.139954
https://hdl.handle.net/10459.1/469737
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Reproducció del document publicat a https://doi.org/10.1016/j.physletb.2025.139954
Physics Letters B, 2025, vol. 870, núm. 139954, p. 1-8
dc.rights.none.fl_str_mv cc-by (c) Luciano et al., 2025
Attribution 4.0 International
info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by/4.0/
rights_invalid_str_mv cc-by (c) Luciano et al., 2025
Attribution 4.0 International
http://creativecommons.org/licenses/by/4.0/
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:Repositori Obert UdL
instname:Universitat de Lleida (UdL)
instname_str Universitat de Lleida (UdL)
reponame_str Repositori Obert UdL
collection Repositori Obert UdL
repository.name.fl_str_mv
repository.mail.fl_str_mv
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