Adiabatic density perturbations and matter generation from the MSSM

Details Adiabatic density perturbations and matter generation from the MSSM Adiabatic density perturbations and matter generation from the MSSM

2002-11-11

arxiv.org/abs/hep-ph/0211147v1

Phys.Rev.Lett. 90 (2003) 091302

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, RevTeX, 1 postscript figure included

Scientific paper

10.1103/PhysRevLett.90.091302

We propose that the inflaton is coupled to ordinary matter only gravitationally and that it decays into a completely hidden sector. In this scenario both baryonic and dark matter originate from the decay of a flat direction of the minimal supersymmetric standard model (MSSM), which is shown to generate the desired adiabatic perturbation spectrum via the curvaton mechanism. The requirement that the energy density along the flat direction dominates over the inflaton decay products fixes the flat direction almost uniquely. The present residual energy density in the hidden sector is typically shown to be small.

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