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Identifying the curvaton within MSSM

Research output: Contribution to journalJournal article

Published

Article number7
Journal publication date9/10/2006
JournalJournal of Cosmology and Astroparticle Physics
Journal number10
Volume2006
Original languageEnglish

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