Interacting constituents in cosmology

dc.contributor.authorAldrovandi, R. [UNESP]
dc.contributor.authorCuzinatto, R. R. [UNESP]
dc.contributor.authorMedeiros, L. G. [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.date.accessioned2022-04-28T20:42:16Z
dc.date.available2022-04-28T20:42:16Z
dc.date.issued2008-06-01
dc.description.abstractUniverse 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.en
dc.description.affiliationInstituto de Física Teórica Universidade Estadual Paulista, Rua Pamplona 145, 01405-900 São Paulo SP
dc.description.affiliationUnespInstituto de Física Teórica Universidade Estadual Paulista, Rua Pamplona 145, 01405-900 São Paulo SP
dc.format.extent857-879
dc.identifierhttp://dx.doi.org/10.1142/S0218271808012541
dc.identifier.citationInternational Journal of Modern Physics D, v. 17, n. 6, p. 857-879, 2008.
dc.identifier.doi10.1142/S0218271808012541
dc.identifier.issn0218-2718
dc.identifier.scopus2-s2.0-46849114118
dc.identifier.urihttp://hdl.handle.net/11449/225213
dc.language.isoeng
dc.relation.ispartofInternational Journal of Modern Physics D
dc.sourceScopus
dc.subjectCosmology
dc.subjectEquation of state
dc.subjectStatistical mechanics
dc.titleInteracting constituents in cosmologyen
dc.typeArtigo

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