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Article: Renormalization group approach to causal bulk viscous cosmological models

TitleRenormalization group approach to causal bulk viscous cosmological models
Authors
Issue Date2002
PublisherInstitute of Physics Publishing. The Journal's web site is located at http://www.iop.org/EJ/cqg
Citation
Classical and Quantum Gravity, 2002, v. 19 n. 11, p. 3003-3015 How to Cite?
AbstractThe renormaiization group method is applied to the study of homogeneous and flat Friedmann-Robertson-Walker type universes, filled with a causal bulk viscous cosmological fluid. The starting point of the study is the consideration of the scaling properties of the gravitational field equations, the causal evolution equation of the bulk viscous pressure and the equations of state. The requirement of scale invariance imposes strong constraints on the temporal evolution of the bulk viscosity coefficient, temperature and relaxation time, thus leading to the possibility of obtaining the bulk viscosity coefficient-energy density dependence. For a cosmological model with bulk viscosity coefficient proportional to the Hubble parameter, we perform the analysis of the renormaiization group flow around the scale-invariant fixed point, thereby obtaining the long-time behaviour of the scale factor.
Persistent Identifierhttp://hdl.handle.net/10722/91829
ISSN
2015 Impact Factor: 2.837
2015 SCImago Journal Rankings: 1.633
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorBelinchón, JAen_HK
dc.contributor.authorHarko, Ten_HK
dc.contributor.authorMak, MKen_HK
dc.date.accessioned2010-09-17T10:27:50Z-
dc.date.available2010-09-17T10:27:50Z-
dc.date.issued2002en_HK
dc.identifier.citationClassical and Quantum Gravity, 2002, v. 19 n. 11, p. 3003-3015en_HK
dc.identifier.issn0264-9381en_HK
dc.identifier.urihttp://hdl.handle.net/10722/91829-
dc.description.abstractThe renormaiization group method is applied to the study of homogeneous and flat Friedmann-Robertson-Walker type universes, filled with a causal bulk viscous cosmological fluid. The starting point of the study is the consideration of the scaling properties of the gravitational field equations, the causal evolution equation of the bulk viscous pressure and the equations of state. The requirement of scale invariance imposes strong constraints on the temporal evolution of the bulk viscosity coefficient, temperature and relaxation time, thus leading to the possibility of obtaining the bulk viscosity coefficient-energy density dependence. For a cosmological model with bulk viscosity coefficient proportional to the Hubble parameter, we perform the analysis of the renormaiization group flow around the scale-invariant fixed point, thereby obtaining the long-time behaviour of the scale factor.en_HK
dc.languageengen_HK
dc.publisherInstitute of Physics Publishing. The Journal's web site is located at http://www.iop.org/EJ/cqgen_HK
dc.relation.ispartofClassical and Quantum Gravityen_HK
dc.titleRenormalization group approach to causal bulk viscous cosmological modelsen_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.doi10.1088/0264-9381/19/11/316en_HK
dc.identifier.scopuseid_2-s2.0-0036274945en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0036274945&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume19en_HK
dc.identifier.issue11en_HK
dc.identifier.spage3003en_HK
dc.identifier.epage3015en_HK
dc.identifier.isiWOS:000176448300019-

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