Identifying the curvaton within MSSM

Details Identifying the curvaton within MSSM Identifying the curvaton within MSSM

2006-03-30

arxiv.org/abs/hep-ph/0603255v2

JCAP 0610 (2006) 007

Physics

High Energy Physics

High Energy Physics - Phenomenology

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

Scientific paper

10.1088/1475-7516/2006/10/007

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.

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