Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2003-06-03
Phys.Rev.Lett. 92 (2004) 241301
Physics
High Energy Physics
High Energy Physics - Phenomenology
4 pages, version to be published in PRL
Scientific paper
10.1103/PhysRevLett.92.241301
We discuss an unique possibility of generating adiabatic density perturbations and leptogenesis from the spatial fluctuations of the inflaton decay rate. The key assumption is that the initial isocurvature perturbations are created in the right handed sneutrino sector during inflation which is then converted into adiabatic perturbations when the inflaton decays. We discuss distinct imprints on the cosmic micro wave background radiation, which can distinguish non-thermal versus thermal leptogenesis.
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