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A model for fluctuating inflaton coupling: (s)neutrino induced adiabatic perturbations and non-thermal leptogenesis

Research output: Contribution to journalJournal article


Article number241301
<mark>Journal publication date</mark>3/06/2003
<mark>Journal</mark>Physical Review Letters
Issue number24
Number of pages4
<mark>Original language</mark>English


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.

Bibliographic note

© 2004 The American Physical Society

4 pages, version to be published in PRL