Thermodynamics of nonsingular bouncing universes

Detalhes bibliográficos
Autor(a) principal: Ferreira, Pedro da Cunha
Data de Publicação: 2016
Outros Autores: Pavón, Diego
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFRN
Texto Completo: https://repositorio.ufrn.br/handle/123456789/31297
Resumo: Homogeneous and isotropic, nonsingular, bouncing world models are designed to evade the initial singularity at the beginning of the cosmic expansion. Here, we study the thermodynamics of the subset of these models governed by general relativity. Considering the entropy of matter and radiation and considering the entropy of the apparent horizon to be proportional to its area, we argue that these models do not respect the generalized second law of thermodynamics, also away from the bounce
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spelling Ferreira, Pedro da CunhaPavón, Diego2021-01-20T18:28:39Z2021-01-20T18:28:39Z2016-01-22FERREIRA, Pedro da Cunha.; PAVÓN, Diego. Thermodynamics of nonsingular bouncing universes. The European Physical Journal C, [S.L.], v. 76, n. 1, p. 37-37, jan. 2016. Springer Science and Business Media LLC. http://dx.doi.org/10.1140/epjc/s10052-016-3886-2. Disponível em: https://link.springer.com/article/10.1140/epjc/s10052-016-3886-2. Acesso em: 27 nov 2020. DOI 10.1140/epjc/s10052-016-3886-21434-6052https://repositorio.ufrn.br/handle/123456789/3129710.1140/epjc/s10052-016-3886-2SpringerAttribution 3.0 Brazilhttp://creativecommons.org/licenses/by/3.0/br/info:eu-repo/semantics/openAccessThermodynamicsBouncing universesNonsingular bouncing universesThermodynamics of nonsingular bouncing universesinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleHomogeneous and isotropic, nonsingular, bouncing world models are designed to evade the initial singularity at the beginning of the cosmic expansion. Here, we study the thermodynamics of the subset of these models governed by general relativity. Considering the entropy of matter and radiation and considering the entropy of the apparent horizon to be proportional to its area, we argue that these models do not respect the generalized second law of thermodynamics, also away from the bounceengreponame:Repositório Institucional da UFRNinstname:Universidade Federal do Rio Grande do Norte (UFRN)instacron:UFRNORIGINALThermodynamicsNonsingularBouncing_Ferreira_2016.pdfThermodynamicsNonsingularBouncing_Ferreira_2016.pdfapplication/pdf556212https://repositorio.ufrn.br/bitstream/123456789/31297/1/ThermodynamicsNonsingularBouncing_Ferreira_2016.pdfb22ec3c7d3ece3c0fcf9b0f89c26097aMD51CC-LICENSElicense_rdflicense_rdfapplication/rdf+xml; charset=utf-8914https://repositorio.ufrn.br/bitstream/123456789/31297/2/license_rdf4d2950bda3d176f570a9f8b328dfbbefMD52LICENSElicense.txtlicense.txttext/plain; charset=utf-81484https://repositorio.ufrn.br/bitstream/123456789/31297/3/license.txte9597aa2854d128fd968be5edc8a28d9MD53TEXTThermodynamicsNonsingularBouncing_Ferreira_2016.pdf.txtThermodynamicsNonsingularBouncing_Ferreira_2016.pdf.txtExtracted texttext/plain23083https://repositorio.ufrn.br/bitstream/123456789/31297/4/ThermodynamicsNonsingularBouncing_Ferreira_2016.pdf.txtad1ed811b115a08f1f00fe787077b215MD54THUMBNAILThermodynamicsNonsingularBouncing_Ferreira_2016.pdf.jpgThermodynamicsNonsingularBouncing_Ferreira_2016.pdf.jpgGenerated Thumbnailimage/jpeg1791https://repositorio.ufrn.br/bitstream/123456789/31297/5/ThermodynamicsNonsingularBouncing_Ferreira_2016.pdf.jpg831c9de1917b3fd3e55ef7eef771ce4aMD55123456789/312972021-01-24 07:48:34.396oai:https://repositorio.ufrn.br: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Repositório de PublicaçõesPUBhttp://repositorio.ufrn.br/oai/opendoar:2021-01-24T10:48:34Repositório Institucional da UFRN - Universidade Federal do Rio Grande do Norte (UFRN)false
dc.title.pt_BR.fl_str_mv Thermodynamics of nonsingular bouncing universes
title Thermodynamics of nonsingular bouncing universes
spellingShingle Thermodynamics of nonsingular bouncing universes
Ferreira, Pedro da Cunha
Thermodynamics
Bouncing universes
Nonsingular bouncing universes
title_short Thermodynamics of nonsingular bouncing universes
title_full Thermodynamics of nonsingular bouncing universes
title_fullStr Thermodynamics of nonsingular bouncing universes
title_full_unstemmed Thermodynamics of nonsingular bouncing universes
title_sort Thermodynamics of nonsingular bouncing universes
author Ferreira, Pedro da Cunha
author_facet Ferreira, Pedro da Cunha
Pavón, Diego
author_role author
author2 Pavón, Diego
author2_role author
dc.contributor.author.fl_str_mv Ferreira, Pedro da Cunha
Pavón, Diego
dc.subject.por.fl_str_mv Thermodynamics
Bouncing universes
Nonsingular bouncing universes
topic Thermodynamics
Bouncing universes
Nonsingular bouncing universes
description Homogeneous and isotropic, nonsingular, bouncing world models are designed to evade the initial singularity at the beginning of the cosmic expansion. Here, we study the thermodynamics of the subset of these models governed by general relativity. Considering the entropy of matter and radiation and considering the entropy of the apparent horizon to be proportional to its area, we argue that these models do not respect the generalized second law of thermodynamics, also away from the bounce
publishDate 2016
dc.date.issued.fl_str_mv 2016-01-22
dc.date.accessioned.fl_str_mv 2021-01-20T18:28:39Z
dc.date.available.fl_str_mv 2021-01-20T18:28:39Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
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status_str publishedVersion
dc.identifier.citation.fl_str_mv FERREIRA, Pedro da Cunha.; PAVÓN, Diego. Thermodynamics of nonsingular bouncing universes. The European Physical Journal C, [S.L.], v. 76, n. 1, p. 37-37, jan. 2016. Springer Science and Business Media LLC. http://dx.doi.org/10.1140/epjc/s10052-016-3886-2. Disponível em: https://link.springer.com/article/10.1140/epjc/s10052-016-3886-2. Acesso em: 27 nov 2020. DOI 10.1140/epjc/s10052-016-3886-2
dc.identifier.uri.fl_str_mv https://repositorio.ufrn.br/handle/123456789/31297
dc.identifier.issn.none.fl_str_mv 1434-6052
dc.identifier.doi.none.fl_str_mv 10.1140/epjc/s10052-016-3886-2
identifier_str_mv FERREIRA, Pedro da Cunha.; PAVÓN, Diego. Thermodynamics of nonsingular bouncing universes. The European Physical Journal C, [S.L.], v. 76, n. 1, p. 37-37, jan. 2016. Springer Science and Business Media LLC. http://dx.doi.org/10.1140/epjc/s10052-016-3886-2. Disponível em: https://link.springer.com/article/10.1140/epjc/s10052-016-3886-2. Acesso em: 27 nov 2020. DOI 10.1140/epjc/s10052-016-3886-2
1434-6052
10.1140/epjc/s10052-016-3886-2
url https://repositorio.ufrn.br/handle/123456789/31297
dc.language.iso.fl_str_mv eng
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dc.rights.driver.fl_str_mv Attribution 3.0 Brazil
http://creativecommons.org/licenses/by/3.0/br/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Attribution 3.0 Brazil
http://creativecommons.org/licenses/by/3.0/br/
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Springer
publisher.none.fl_str_mv Springer
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