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Article: The cosmological model of Brans-Dicke theory

TitleThe cosmological model of Brans-Dicke theory
Authors
Issue Date1996
PublisherSpringer Verlag Dordrecht. The Journal's web site is located at http://springerlink.metapress.com/openurl.asp?genre=journal&issn=0004-640X
Citation
Astrophysics And Space Science, 1996, v. 235 n. 2, p. 207-218 How to Cite?
AbstractWe use the generalized Brans-Dicke theory, in which the Pauli metric is identified to be the physical space-time metric, to study the Universe in different epochs. Exact analytical expressions for dilaton field σ, cosmological radius R and density parameter Ω are obtained for k = +1,0, -1 Universe in the radiation-dominated epoch. For matter dominated Epoch, exact analytical expressions for Hubble parameter H, cosmological radius, dilaton field, deceleration factor q, density parameter and the gravitational coupling of the ordinary matter are obtained for the flat Universe. Other important results are: (1) the density parameter Ω is always less than unity for the flat Universe because the dilaton field plays a role as an effective dark matter, and (2) the new Brans-Dicke parameter ω must be larger than 31.75 in order to consistent with the observed data.
Persistent Identifierhttp://hdl.handle.net/10722/80538
ISSN
2015 Impact Factor: 1.678
2015 SCImago Journal Rankings: 0.667
References

 

DC FieldValueLanguage
dc.contributor.authorLu, HQen_HK
dc.contributor.authorCheng, KSen_HK
dc.date.accessioned2010-09-06T08:07:33Z-
dc.date.available2010-09-06T08:07:33Z-
dc.date.issued1996en_HK
dc.identifier.citationAstrophysics And Space Science, 1996, v. 235 n. 2, p. 207-218en_HK
dc.identifier.issn0004-640Xen_HK
dc.identifier.urihttp://hdl.handle.net/10722/80538-
dc.description.abstractWe use the generalized Brans-Dicke theory, in which the Pauli metric is identified to be the physical space-time metric, to study the Universe in different epochs. Exact analytical expressions for dilaton field σ, cosmological radius R and density parameter Ω are obtained for k = +1,0, -1 Universe in the radiation-dominated epoch. For matter dominated Epoch, exact analytical expressions for Hubble parameter H, cosmological radius, dilaton field, deceleration factor q, density parameter and the gravitational coupling of the ordinary matter are obtained for the flat Universe. Other important results are: (1) the density parameter Ω is always less than unity for the flat Universe because the dilaton field plays a role as an effective dark matter, and (2) the new Brans-Dicke parameter ω must be larger than 31.75 in order to consistent with the observed data.en_HK
dc.languageengen_HK
dc.publisherSpringer Verlag Dordrecht. The Journal's web site is located at http://springerlink.metapress.com/openurl.asp?genre=journal&issn=0004-640Xen_HK
dc.relation.ispartofAstrophysics and Space Scienceen_HK
dc.titleThe cosmological model of Brans-Dicke theoryen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0004-640X&volume=235&spage=207&epage=218&date=1996&atitle=The+cosmological+model+of+Brans-Dicke+theoryen_HK
dc.identifier.emailCheng, KS: hrspksc@hkucc.hku.hken_HK
dc.identifier.authorityCheng, KS=rp00675en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.scopuseid_2-s2.0-0041117657en_HK
dc.identifier.hkuros14450en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0041117657&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume235en_HK
dc.identifier.issue2en_HK
dc.identifier.spage207en_HK
dc.identifier.epage218en_HK
dc.publisher.placeNetherlandsen_HK
dc.identifier.scopusauthoridLu, HQ=26424502000en_HK
dc.identifier.scopusauthoridCheng, KS=9745798500en_HK

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