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Article: Particle creation in cosmological models with varying gravitational and cosmological "constants"
Title | Particle creation in cosmological models with varying gravitational and cosmological "constants" |
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Authors | |
Keywords | Frw Universe Matter Creation Variable G And Λ |
Issue Date | 1999 |
Publisher | Springer 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? |
Abstract | Einstein'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 Identifier | http://hdl.handle.net/10722/91836 |
ISSN | 2023 Impact Factor: 2.1 2023 SCImago Journal Rankings: 0.794 |
ISI Accession Number ID | |
References |
DC Field | Value | Language |
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dc.contributor.author | Harko, T | en_HK |
dc.contributor.author | Mak, MK | en_HK |
dc.date.accessioned | 2010-09-17T10:28:02Z | - |
dc.date.available | 2010-09-17T10:28:02Z | - |
dc.date.issued | 1999 | en_HK |
dc.identifier.citation | General Relativity and Gravitation, 1999, v. 31 n. 6, p. 849-862 | en_HK |
dc.identifier.issn | 0001-7701 | en_HK |
dc.identifier.uri | http://hdl.handle.net/10722/91836 | - |
dc.description.abstract | Einstein'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.language | eng | en_HK |
dc.publisher | Springer New York LLC. The Journal's web site is located at http://springerlink.metapress.com/openurl.asp?genre=journal&issn=0001-7701 | en_HK |
dc.relation.ispartof | General Relativity and Gravitation | en_HK |
dc.subject | Frw Universe | en_HK |
dc.subject | Matter Creation | en_HK |
dc.subject | Variable G And Λ | en_HK |
dc.title | Particle creation in cosmological models with varying gravitational and cosmological "constants" | en_HK |
dc.type | Article | en_HK |
dc.identifier.email | Harko, TC:harko@hkucc.hku.hk | en_HK |
dc.identifier.authority | Harko, TC=rp1333 | en_HK |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.scopus | eid_2-s2.0-0033239715 | en_HK |
dc.relation.references | http://www.scopus.com/mlt/select.url?eid=2-s2.0-0033239715&selection=ref&src=s&origin=recordpage | en_HK |
dc.identifier.volume | 31 | en_HK |
dc.identifier.issue | 6 | en_HK |
dc.identifier.spage | 849 | en_HK |
dc.identifier.epage | 862 | en_HK |
dc.identifier.isi | WOS:000080857300004 | - |
dc.identifier.issnl | 0001-7701 | - |