Interacting constituents in cosmology

Detalhes bibliográficos
Autor(a) principal: Aldrovandi, R. [UNESP]
Data de Publicação: 2008
Outros Autores: Cuzinatto, R. R. [UNESP], Medeiros, L. G. [UNESP]
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1142/S0218271808012541
http://hdl.handle.net/11449/225213
Resumo: Universe evolution, as described by Friedmann's equations, is determined by source terms fixed by the choice of pressure × energy density equations of state p(ρ). The usual approach in cosmology considers equations of state accounting only for kinematic terms, ignoring the contribution from the interactions between the particles constituting the source fluid. In this work the importance of these neglected terms is emphasized. A systematic method, based on the statistical mechanics of real fluids, is proposed to include them. A toy model is presented which shows how such interaction terms could be applied to engender significant cosmological effects. © 2008 World Scientific Publishing Company.
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spelling Interacting constituents in cosmologyCosmologyEquation of stateStatistical mechanicsUniverse evolution, as described by Friedmann's equations, is determined by source terms fixed by the choice of pressure × energy density equations of state p(ρ). The usual approach in cosmology considers equations of state accounting only for kinematic terms, ignoring the contribution from the interactions between the particles constituting the source fluid. In this work the importance of these neglected terms is emphasized. A systematic method, based on the statistical mechanics of real fluids, is proposed to include them. A toy model is presented which shows how such interaction terms could be applied to engender significant cosmological effects. © 2008 World Scientific Publishing Company.Instituto de Física Teórica Universidade Estadual Paulista, Rua Pamplona 145, 01405-900 São Paulo SPInstituto de Física Teórica Universidade Estadual Paulista, Rua Pamplona 145, 01405-900 São Paulo SPUniversidade Estadual Paulista (UNESP)Aldrovandi, R. [UNESP]Cuzinatto, R. R. [UNESP]Medeiros, L. G. [UNESP]2022-04-28T20:42:16Z2022-04-28T20:42:16Z2008-06-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article857-879http://dx.doi.org/10.1142/S0218271808012541International Journal of Modern Physics D, v. 17, n. 6, p. 857-879, 2008.0218-2718http://hdl.handle.net/11449/22521310.1142/S02182718080125412-s2.0-46849114118Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengInternational Journal of Modern Physics Dinfo:eu-repo/semantics/openAccess2022-04-28T20:42:16Zoai:repositorio.unesp.br:11449/225213Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462022-04-28T20:42:16Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Interacting constituents in cosmology
title Interacting constituents in cosmology
spellingShingle Interacting constituents in cosmology
Aldrovandi, R. [UNESP]
Cosmology
Equation of state
Statistical mechanics
title_short Interacting constituents in cosmology
title_full Interacting constituents in cosmology
title_fullStr Interacting constituents in cosmology
title_full_unstemmed Interacting constituents in cosmology
title_sort Interacting constituents in cosmology
author Aldrovandi, R. [UNESP]
author_facet Aldrovandi, R. [UNESP]
Cuzinatto, R. R. [UNESP]
Medeiros, L. G. [UNESP]
author_role author
author2 Cuzinatto, R. R. [UNESP]
Medeiros, L. G. [UNESP]
author2_role author
author
dc.contributor.none.fl_str_mv Universidade Estadual Paulista (UNESP)
dc.contributor.author.fl_str_mv Aldrovandi, R. [UNESP]
Cuzinatto, R. R. [UNESP]
Medeiros, L. G. [UNESP]
dc.subject.por.fl_str_mv Cosmology
Equation of state
Statistical mechanics
topic Cosmology
Equation of state
Statistical mechanics
description Universe evolution, as described by Friedmann's equations, is determined by source terms fixed by the choice of pressure × energy density equations of state p(ρ). The usual approach in cosmology considers equations of state accounting only for kinematic terms, ignoring the contribution from the interactions between the particles constituting the source fluid. In this work the importance of these neglected terms is emphasized. A systematic method, based on the statistical mechanics of real fluids, is proposed to include them. A toy model is presented which shows how such interaction terms could be applied to engender significant cosmological effects. © 2008 World Scientific Publishing Company.
publishDate 2008
dc.date.none.fl_str_mv 2008-06-01
2022-04-28T20:42:16Z
2022-04-28T20:42:16Z
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/10.1142/S0218271808012541
International Journal of Modern Physics D, v. 17, n. 6, p. 857-879, 2008.
0218-2718
http://hdl.handle.net/11449/225213
10.1142/S0218271808012541
2-s2.0-46849114118
url http://dx.doi.org/10.1142/S0218271808012541
http://hdl.handle.net/11449/225213
identifier_str_mv International Journal of Modern Physics D, v. 17, n. 6, p. 857-879, 2008.
0218-2718
10.1142/S0218271808012541
2-s2.0-46849114118
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv International Journal of Modern Physics D
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 857-879
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
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