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Article: Particle creation in cosmological models with varying gravitational and cosmological "constants"

TitleParticle creation in cosmological models with varying gravitational and cosmological "constants"
Authors
KeywordsFrw Universe
Matter Creation
Variable G And Λ
Issue Date1999
PublisherSpringer New York LLC. The Journal's web site is located at http://springerlink.metapress.com/openurl.asp?genre=journal&issn=0001-7701
Citation
General Relativity and Gravitation, 1999, v. 31 n. 6, p. 849-862 How to Cite?
AbstractEinstein's field equations with variable gravitational coupling G = G(t) and decaying vacuum energy density Λ = Λ(t) are considered as describing matter creation in a cosmological framework. The particle creation rate is determined by the variation rate of both G and Λ. By considering simple phenomenological evolution laws for G and Λ, an exact solution of the gravitational field equations for a flat Friedmann-Robertson-Walker (FRW) space-time is obtained leading to a self-consistent cosmological model describing matter and entropy generation in the very early Universe.
Persistent Identifierhttp://hdl.handle.net/10722/91836
ISSN
2015 Impact Factor: 1.668
2015 SCImago Journal Rankings: 0.734
References

 

DC FieldValueLanguage
dc.contributor.authorHarko, Ten_HK
dc.contributor.authorMak, MKen_HK
dc.date.accessioned2010-09-17T10:28:02Z-
dc.date.available2010-09-17T10:28:02Z-
dc.date.issued1999en_HK
dc.identifier.citationGeneral Relativity and Gravitation, 1999, v. 31 n. 6, p. 849-862en_HK
dc.identifier.issn0001-7701en_HK
dc.identifier.urihttp://hdl.handle.net/10722/91836-
dc.description.abstractEinstein's field equations with variable gravitational coupling G = G(t) and decaying vacuum energy density Λ = Λ(t) are considered as describing matter creation in a cosmological framework. The particle creation rate is determined by the variation rate of both G and Λ. By considering simple phenomenological evolution laws for G and Λ, an exact solution of the gravitational field equations for a flat Friedmann-Robertson-Walker (FRW) space-time is obtained leading to a self-consistent cosmological model describing matter and entropy generation in the very early Universe.en_HK
dc.languageengen_HK
dc.publisherSpringer New York LLC. The Journal's web site is located at http://springerlink.metapress.com/openurl.asp?genre=journal&issn=0001-7701en_HK
dc.relation.ispartofGeneral Relativity and Gravitationen_HK
dc.subjectFrw Universeen_HK
dc.subjectMatter Creationen_HK
dc.subjectVariable G And Λen_HK
dc.titleParticle creation in cosmological models with varying gravitational and cosmological "constants"en_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-s2.0-0033239715en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0033239715&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume31en_HK
dc.identifier.issue6en_HK
dc.identifier.spage849en_HK
dc.identifier.epage862en_HK

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