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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
Harko, TMak, MK
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
0001-7701
2021 Impact Factor: 2.840
2020 SCImago Journal Rankings: 0.822
References
References in Scopus

 

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
dc.identifier.issnl0001-7701-

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