Rights statement: © 2003 The American Physical Society
Final published version, 92.6 KB, PDF document
Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Adiabatic density perturbations and matter generation from the MSSM.
AU - Enqvist, Kari
AU - Kasuya, Shinta
AU - Mazumdar, Anupam
N1 - © 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
PY - 2003/3/6
Y1 - 2003/3/6
N2 - 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.
AB - 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.
U2 - 10.1103/PhysRevLett.90.091302
DO - 10.1103/PhysRevLett.90.091302
M3 - Journal article
VL - 90
JO - Physical review letters
JF - Physical review letters
IS - 9
M1 - 091302
ER -