Correspondence of cosmology from non-extensive thermodynamics with fluids of generalized equation of state

We show that there is a correspondence between cosmology from non-extensive thermodynamics and cosmology with fluids of redefined and generalized equation of state. We first establish the correspondence in the case of basic non-extensive thermodynamics, and then we proceed by investigating the more...

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Autores: Nojiri, Shin'ichi, Odintsov, Sergei D., Saridakis, Emmanuel, Myrzakulov, Ratbay
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2020
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/236777
Acceso en línea:http://hdl.handle.net/10261/236777
Access Level:acceso abierto
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spelling Correspondence of cosmology from non-extensive thermodynamics with fluids of generalized equation of stateNojiri, Shin'ichiOdintsov, Sergei D.Saridakis, EmmanuelMyrzakulov, RatbayWe show that there is a correspondence between cosmology from non-extensive thermodynamics and cosmology with fluids of redefined and generalized equation of state. We first establish the correspondence in the case of basic non-extensive thermodynamics, and then we proceed by investigating the more consistent case, from the quantum field theoretical point of view, of varying exponent, namely depending on the scale. The obtained duality provides a way of explaining the complicated phenomenological forms of the effective fluid equation-of-state parameters that are being broadly used in the literature, since their microphysical origin may indeed lie in the non-extensive thermodynamics of spacetime. Finally, concerning the cosmological behavior, we show that at late times the effective fluid may drive the universe acceleration even in the absence of an explicit cosmological constant, and even if the initial fluid is the standard dust matter one. Similarly, at early times we obtain an effective cosmological constant which is enhanced through screening, and hence it can drive a successful inflation without spoiling the correct late-time acceleration.This work is partly supported by MEXT KAKENHI Grant-in-Aid for Scientific Research on Innovative Areas g Cosmic Acceleration h No. 15H05890 (S.N.) and the JSPS Grant-in-Aid for Scientific Research (C) No. 18K03615 (S.N.), and by MINECO (Spain), FIS2016-76363-P, and by project 2017 SGR247 (AGAUR, Catalonia) (S.D.O). The work was carried out with the financial support of the Ministry of Education and Science of the Republic of Kazakhstan, Grant No 0118RK00935.Peer reviewedElsevierMinistry of Education, Culture, Sports, Science and Technology (Japan)Japan Society for the Promotion of ScienceMinisterio de Economía y Competitividad (España)Generalitat de CatalunyaMinistry of Education and Science (Kazakhstan)Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202120212020info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10261/236777reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/FIS2016-76363-Phttps://doi.org/10.1016/j.nuclphysb.2019.114850Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/2367772026-05-22T06:33:51Z
dc.title.none.fl_str_mv Correspondence of cosmology from non-extensive thermodynamics with fluids of generalized equation of state
title Correspondence of cosmology from non-extensive thermodynamics with fluids of generalized equation of state
spellingShingle Correspondence of cosmology from non-extensive thermodynamics with fluids of generalized equation of state
Nojiri, Shin'ichi
title_short Correspondence of cosmology from non-extensive thermodynamics with fluids of generalized equation of state
title_full Correspondence of cosmology from non-extensive thermodynamics with fluids of generalized equation of state
title_fullStr Correspondence of cosmology from non-extensive thermodynamics with fluids of generalized equation of state
title_full_unstemmed Correspondence of cosmology from non-extensive thermodynamics with fluids of generalized equation of state
title_sort Correspondence of cosmology from non-extensive thermodynamics with fluids of generalized equation of state
dc.creator.none.fl_str_mv Nojiri, Shin'ichi
Odintsov, Sergei D.
Saridakis, Emmanuel
Myrzakulov, Ratbay
author Nojiri, Shin'ichi
author_facet Nojiri, Shin'ichi
Odintsov, Sergei D.
Saridakis, Emmanuel
Myrzakulov, Ratbay
author_role author
author2 Odintsov, Sergei D.
Saridakis, Emmanuel
Myrzakulov, Ratbay
author2_role author
author
author
dc.contributor.none.fl_str_mv Ministry of Education, Culture, Sports, Science and Technology (Japan)
Japan Society for the Promotion of Science
Ministerio de Economía y Competitividad (España)
Generalitat de Catalunya
Ministry of Education and Science (Kazakhstan)
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
description We show that there is a correspondence between cosmology from non-extensive thermodynamics and cosmology with fluids of redefined and generalized equation of state. We first establish the correspondence in the case of basic non-extensive thermodynamics, and then we proceed by investigating the more consistent case, from the quantum field theoretical point of view, of varying exponent, namely depending on the scale. The obtained duality provides a way of explaining the complicated phenomenological forms of the effective fluid equation-of-state parameters that are being broadly used in the literature, since their microphysical origin may indeed lie in the non-extensive thermodynamics of spacetime. Finally, concerning the cosmological behavior, we show that at late times the effective fluid may drive the universe acceleration even in the absence of an explicit cosmological constant, and even if the initial fluid is the standard dust matter one. Similarly, at early times we obtain an effective cosmological constant which is enhanced through screening, and hence it can drive a successful inflation without spoiling the correct late-time acceleration.
publishDate 2020
dc.date.none.fl_str_mv 2020
2021
2021
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/10261/236777
url http://hdl.handle.net/10261/236777
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv #PLACEHOLDER_PARENT_METADATA_VALUE#
info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/FIS2016-76363-P
https://doi.org/10.1016/j.nuclphysb.2019.114850
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
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: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
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