Show simple item record

dc.contributor.authorClifton, Ten_US
dc.contributor.authorBarrow, JDen_US
dc.contributor.authorScherrer, RJen_US
dc.date.accessioned2016-12-01T13:12:12Z
dc.date.submitted2016-11-07T16:52:10.358Z
dc.identifier.urihttp://qmro.qmul.ac.uk/xmlui/handle/123456789/18066
dc.description10 pages, 7 figures. Published version
dc.description10 pages, 7 figures. Published versionen_US
dc.description10 pages, 7 figures. Published versionen_US
dc.description.abstractWe study here the effect of a varying G on the evolution of the early Universe and, in particular, on primordial nucleosynthesis. This variation of G is modelled using the Brans-Dicke theory as well as a more general class of scalar-tensor theories. Modified nucleosynthesis codes are used to investigate this effect and the results obtained are used to constrain the parameters of the theories. We extend previous studies of primordial nucleosynthesis in scalar-tensor theories by including effects which can cause a slow variation of G during radiation domination and by including a late-time accelerating phase to the Universe's history. We include a brief discussion on the epoch of matter-radiation equality in Brans-Dicke theory, which is also of interest for determining the positions of the cosmic microwave background power-spectrum peaks.en_US
dc.format.extent123526 - ?en_US
dc.relation.ispartofPhys.Rev. Den_US
dc.rightsThis is a pre-copyedited, author-produced PDF of an article accepted for publication in Physical Review D following peer review. The version of record is available http://journals.aps.org/prd/abstract/10.1103/PhysRevD.71.123526
dc.subjectastro-phen_US
dc.subjectastro-phen_US
dc.subjectgr-qcen_US
dc.subjecthep-then_US
dc.titleConstraints on the Variation of G from Primordial Nucleosynthesisen_US
dc.typeArticle
dc.rights.holder© 2005 American Physical Society
dc.identifier.doi10.1103/PhysRevD.71.123526en_US
pubs.author-urlhttp://arxiv.org/abs/astro-ph/0504418v3en_US
pubs.notesNo embargoen_US
pubs.publisher-urlhttp://dx.doi.org/10.1103/PhysRevD.71.123526en_US
pubs.volume71en_US


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record