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Adiabatic density perturbations and matter generation from the MSSM.

Research output: Contribution to journalJournal article


Article number091302
<mark>Journal publication date</mark>6/03/2003
<mark>Journal</mark>Physical Review Letters
Issue number9
Number of pages4
<mark>Original language</mark>English


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, 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.

Bibliographic note

© 2003 The American Physical Society

This paper provides an alternative explanation of the CMB temperature anisotropy. Supersymmetric partners can provide the seed fluctuations when they decay, and also provide dark matter. These particles can be identified at the LHC. It has opened the way to new research directions in SUSY cosmology. 73 citations (SPIRES). RAE_import_type : Journal article RAE_uoa_type : Physics