Identifying the curvaton within MSSM
Rouzbeh Allahverdi, Kari Enqvist, Asko Jokinen, Anupam Mazumdar
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 u1dd flat direction as a viable MSSM curvaton.
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