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

Mazumdar, Anupam (2003) A model for fluctuating inflaton coupling: (s)neutrino induced adiabatic perturbations and non-thermal leptogenesis. Physical review letters, 92 (24). ISSN 1079-7114

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Abstract

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.

Item Type: Journal Article
Journal or Publication Title: Physical review letters
Additional Information: © 2004 The American Physical Society 4 pages, version to be published in PRL
Uncontrolled Keywords: /dk/atira/pure/subjectarea/asjc/3100
Subjects:
Departments: Faculty of Science and Technology > Physics
ID Code: 63511
Deposited By: ep_importer_pure
Deposited On: 02 May 2013 09:46
Refereed?: Yes
Published?: Published
Last Modified: 17 Feb 2020 01:54
URI: https://eprints.lancs.ac.uk/id/eprint/63511

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