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A-term inflation and the smallness of the neutrino masses

Research output: Contribution to journalJournal article


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


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