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A-term inflation and the smallness of the neutrino masses

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Article number18
<mark>Journal publication date</mark>26/07/2007
<mark>Journal</mark>Journal of Cosmology and Astroparticle Physics
Issue number7
Volume2007
<mark>State</mark>Published
<mark>Original language</mark>English

Abstract

The smallness of the neutrino masses may be related to inflation. The minimal supersymmetric Standard Model (MSSM) with small Dirac neutrino masses already has all the necessary ingredients for a successful inflation. In this model the inflaton is a gauge-invariant combination of the right-handed sneutrino, the slepton, and the Higgs field, which generate a flat direction suitable for inflation if the Yukawa coupling is small enough. In a class of models, the observed microwave background anisotropy and the tilted power spectrum are related to the neutrino masses.

Bibliographic note

13 pages, 1 figure, uses JHEP3.cls, minor modifications, final version accepted for publication in JCAP