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Identifying the curvaton within MSSM

Research output: Contribution to journalJournal articlepeer-review

Article number7
<mark>Journal publication date</mark>9/10/2006
<mark>Journal</mark>Journal of Cosmology and Astroparticle Physics
Issue number10
Publication StatusPublished
<mark>Original language</mark>English


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