A model of cosmology and particle physics at an intermediate scale
A model of cosmology and particle physics at an intermediate scale
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.
103517-[12pp]
Bastero-Gil, M.
b329c554-20e8-4180-af13-faaa34be2f84
Di Clemente, V.
4f38d85a-1c05-44c2-9e50-1ab950ca843f
King, S.F.
f8c616b7-0336-4046-a943-700af83a1538
2005
Bastero-Gil, M.
b329c554-20e8-4180-af13-faaa34be2f84
Di Clemente, V.
4f38d85a-1c05-44c2-9e50-1ab950ca843f
King, S.F.
f8c616b7-0336-4046-a943-700af83a1538
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, .
(doi:10.1103/PhysRevD.71.103517).
Abstract
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.
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Published date: 2005
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Local EPrints ID: 57040
URI: http://eprints.soton.ac.uk/id/eprint/57040
ISSN: 1550-7998
PURE UUID: c7911c85-26b4-4311-ab4a-43140dd104e7
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Date deposited: 14 Aug 2008
Last modified: 15 Mar 2024 11:04
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Author:
M. Bastero-Gil
Author:
V. Di Clemente
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