A model of cosmology and particle physics at an intermediate scale
Bastero-Gil, M., Di Clemente, V. and King, S.F. (2005) A model of cosmology and particle physics at an intermediate scale. Physical Review D, 71, 103517-[12pp]. (doi:10.1103/PhysRevD.71.103517).
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We propose a model of cosmology and particle physics in which all relevant scales arise in a natural way from an intermediate string scale. We are led to assign the string scale to the intermediate scale M*~1013 GeV by four independent pieces of physics: electroweak symmetry breaking; the µ parameter; the axion scale; and the neutrino mass scale. The model involves hybrid inflation with the waterfall field N being responsible for generating the µ term, the right-handed neutrino mass scale, and the Peccei-Quinn symmetry breaking scale. The large scale structure of the Universe is generated by the lightest right-handed sneutrino playing the rôle of a coupled curvaton. We show that the correct curvature perturbations may be successfully generated providing the lightest right-handed neutrino is weakly coupled in the seesaw mechanism, consistent with sequential dominance.
|Subjects:||Q Science > QC Physics|
|Divisions:||University Structure - Pre August 2011 > School of Physics and Astronomy
|Date Deposited:||14 Aug 2008|
|Last Modified:||01 Jun 2011 17:04|
|Contributors:||Bastero-Gil, M. (Author)
Di Clemente, V. (Author)
King, S.F. (Author)
|RDF:||RDF+N-Triples, RDF+N3, RDF+XML, Browse.|
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