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Article: Cosmological particle production and causal thermodynamics

TitleCosmological particle production and causal thermodynamics
Authors
Issue Date1999
PublisherC S I R O, Publishing. The Journal's web site is located at http://www.publish.csiro.au/journals/ajp/index.html
Citation
Australian Journal of Physics, 1999, v. 52 n. 4, p. 659-679 How to Cite?
AbstractThe full linear causal Israel-Stewart-Hiscock theory of bulk viscous processes in relativistic cosmological fluids is reformulated as an effective phenomenological theory for describing particle production processes in the early universe. Explicit expressions for the particle balance law and particle production rates are obtained that relate the particle creation rate to the bulk viscous (creation) pressure. The general formalism is applied to the case of a full causal cosmological fluid with bulk viscosity coefficient proportional to the Hubble function. In this case the general solution of the gravitational field equations can be expressed in an exact parametric form. For an appropriate choice of the physical parameters, the dynamics of the universe can be modelled as starting from a vacuum quasi-Minkowskian geometry, followed by an inflationary period but ending in a non-inflationary phase. The influence of the matter creation processes on the evolution of the universe and the behaviour of the energy density, temperature and entropy are investigated. © CSIRO 1999.
Persistent Identifierhttp://hdl.handle.net/10722/91871
ISSN
2002 Impact Factor: 0.385
2003 SCImago Journal Rankings: 0.302
References

 

DC FieldValueLanguage
dc.contributor.authorMak, MKen_HK
dc.contributor.authorHarko, Ten_HK
dc.date.accessioned2010-09-17T10:29:02Z-
dc.date.available2010-09-17T10:29:02Z-
dc.date.issued1999en_HK
dc.identifier.citationAustralian Journal of Physics, 1999, v. 52 n. 4, p. 659-679en_HK
dc.identifier.issn0004-9506en_HK
dc.identifier.urihttp://hdl.handle.net/10722/91871-
dc.description.abstractThe full linear causal Israel-Stewart-Hiscock theory of bulk viscous processes in relativistic cosmological fluids is reformulated as an effective phenomenological theory for describing particle production processes in the early universe. Explicit expressions for the particle balance law and particle production rates are obtained that relate the particle creation rate to the bulk viscous (creation) pressure. The general formalism is applied to the case of a full causal cosmological fluid with bulk viscosity coefficient proportional to the Hubble function. In this case the general solution of the gravitational field equations can be expressed in an exact parametric form. For an appropriate choice of the physical parameters, the dynamics of the universe can be modelled as starting from a vacuum quasi-Minkowskian geometry, followed by an inflationary period but ending in a non-inflationary phase. The influence of the matter creation processes on the evolution of the universe and the behaviour of the energy density, temperature and entropy are investigated. © CSIRO 1999.en_HK
dc.languageengen_HK
dc.publisherC S I R O, Publishing. The Journal's web site is located at http://www.publish.csiro.au/journals/ajp/index.htmlen_HK
dc.relation.ispartofAustralian Journal of Physicsen_HK
dc.titleCosmological particle production and causal thermodynamicsen_HK
dc.typeArticleen_HK
dc.identifier.emailHarko, TC:harko@hkucc.hku.hken_HK
dc.identifier.authorityHarko, TC=rp1333en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.scopuseid_2-s2.0-0007193048en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0007193048&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume52en_HK
dc.identifier.issue4en_HK
dc.identifier.spage659en_HK
dc.identifier.epage679en_HK

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