Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2004-08-30
Phys.Rev. D71 (2005) 103517
Physics
High Energy Physics
High Energy Physics - Phenomenology
23 pages, 2 figures, uses axodraw.sty
Scientific paper
10.1103/PhysRevD.71.103517
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_* \sim 10^{13} GeV by four independent pieces of physics: electroweak symmetry breaking; the \mu parameter; the axion scale; and the neutrino mass scale. The model involves hybrid inflation with the waterfall field N being responsible for generating the \mu 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 role 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 see-saw mechanism, consistent with sequential dominance.
Bastero-Gil Mar
Clemente Vicente Di
King Stephen F.
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