Generating curvature perturbations with or without MSSM flat directions

Details Generating curvature perturbations with or without MSSM flat directions Generating curvature perturbations with or without MSSM flat directions

2007-01-04

arxiv.org/abs/hep-ph/0701024v4

JCAP 0706:029,2007

Physics

High Energy Physics

High Energy Physics - Phenomenology

20pages, no figure, added an appendix, accepted for publication in JCAP

Scientific paper

10.1088/1475-7516/2007/06/029

We consider instant preheating as the mechanism for generating the curvature perturbation at the end of chaotic inflation. Then we examine if inflation could be driven by a Minimal Supersymmetric Standard Model (MSSM) flat direction or a sneutrino. Our simple mechanism relaxes some serious constraints that appeared in past studies, making inflation driven by a MSSM flat direction or a sneutrino more plausible.

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