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Identifying the curvaton within MSSM

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Article number 7 9/10/2006 Journal of Cosmology and Astroparticle Physics 10 2006 Published English

Abstract

We consider inflaton couplings to MSSM flat directions and the thermalization of the inflaton decay products, taking into account gauge symmetry breaking due to flat direction condensates. We then search for a suitable curvaton candidate among the flat directions, requiring an early thermally induced start for the flat direction oscillations to facilitate the necessary curvaton energy density dominance. We demonstrate that the supersymmetry breaking $A$-term is crucial for achieving a successful curvaton scenario. Among the many possible candidates, we identify the ${\bf u_1dd}$ flat direction as a viable MSSM curvaton.

Bibliographic note

9 pages. Discussion on the evaporation of condensate added, final version published in JCAP