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Article: Bianchi-type I and V cosmologies in Einstein-Cartan theory

TitleBianchi-type I and V cosmologies in Einstein-Cartan theory
Authors
Issue Date1999
PublisherSocietà italiana di fisica. The Journal's web site is located at http://paperseek.sif.it/index.php?journal=ncb&action=browse&PHPSESSID=6cb3626f6518c43ee907fc92933362dc
Citation
Nuovo Cimento Della Societa Italiana Di Fisica B, 1999, v. 114 n. 12, p. 1389-1407 How to Cite?
AbstractWithin the framework of the Einstein-Cartan theory a Weyssenhoff-spinuing-fluid-filled homogeneous anisotropic Bianchi-type I and Y space-time is studied. The effects of a cosmological constant upon the dynamics of the early Universe are also considered. In the presence of torsion the general solution of the gravitational fieid equations for a cosmological fluid obeying a linear barotropic equation of state can be expressed in an exact parametric form. Several classes of exact analytical solutions for stiff matter and radiation are also obtained. In the large-time limit the Bianchi-type-V Universe ends in an isotropic open nonflat inflationary era but due to the effects of the spin the isotropization period is shortened. For an appropriate choice of the parameters non-singular behavior occurs and the evolution of the cosmological fluid near the bounce is considered in detail.
Persistent Identifierhttp://hdl.handle.net/10722/91833
ISSN
2003 Impact Factor: 0.285
References

 

DC FieldValueLanguage
dc.contributor.authorHarko, Ten_HK
dc.contributor.authorMak, MKen_HK
dc.contributor.authorLu, HQen_HK
dc.contributor.authorCheng, KSen_HK
dc.date.accessioned2010-09-17T10:27:57Z-
dc.date.available2010-09-17T10:27:57Z-
dc.date.issued1999en_HK
dc.identifier.citationNuovo Cimento Della Societa Italiana Di Fisica B, 1999, v. 114 n. 12, p. 1389-1407en_HK
dc.identifier.issn0369-3554en_HK
dc.identifier.urihttp://hdl.handle.net/10722/91833-
dc.description.abstractWithin the framework of the Einstein-Cartan theory a Weyssenhoff-spinuing-fluid-filled homogeneous anisotropic Bianchi-type I and Y space-time is studied. The effects of a cosmological constant upon the dynamics of the early Universe are also considered. In the presence of torsion the general solution of the gravitational fieid equations for a cosmological fluid obeying a linear barotropic equation of state can be expressed in an exact parametric form. Several classes of exact analytical solutions for stiff matter and radiation are also obtained. In the large-time limit the Bianchi-type-V Universe ends in an isotropic open nonflat inflationary era but due to the effects of the spin the isotropization period is shortened. For an appropriate choice of the parameters non-singular behavior occurs and the evolution of the cosmological fluid near the bounce is considered in detail.en_HK
dc.languageengen_HK
dc.publisherSocietà italiana di fisica. The Journal's web site is located at http://paperseek.sif.it/index.php?journal=ncb&action=browse&PHPSESSID=6cb3626f6518c43ee907fc92933362dcen_HK
dc.relation.ispartofNuovo Cimento della Societa Italiana di Fisica Ben_HK
dc.titleBianchi-type I and V cosmologies in Einstein-Cartan theoryen_HK
dc.typeArticleen_HK
dc.identifier.emailHarko, T: harko@hkucc.hku.hken_HK
dc.identifier.emailCheng, KS: hrspksc@hkucc.hku.hken_HK
dc.identifier.authorityHarko, T=rp01333en_HK
dc.identifier.authorityCheng, KS=rp00675en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.scopuseid_2-s2.0-0033269380en_HK
dc.identifier.hkuros48201-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0033269380&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume114en_HK
dc.identifier.issue12en_HK
dc.identifier.spage1389en_HK
dc.identifier.epage1407en_HK
dc.publisher.placeBolognaen_HK
dc.identifier.scopusauthoridHarko, T=7006485783en_HK
dc.identifier.scopusauthoridMak, MK=7101716592en_HK
dc.identifier.scopusauthoridLu, HQ=26424502000en_HK
dc.identifier.scopusauthoridCheng, KS=9745798500en_HK

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