Gravitino cosmology helped by a right handed (s)neutrino

In this paper, we discuss interesting scenarios resulting from the interplay between the gravitino and the lightest right-handed (s)neutrino. We consider two gravitino mass regimes vastly separated, that is, m3/2=O(100) eV and m3/2≃100 GeV. For the former case, a significant amount of the entropy pr...

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Bibliographic Details
Main Authors: Gongjun Choi, Tsutomu T. Yanagida
Format: Article
Language:English
Published: Elsevier 2022-04-01
Series:Physics Letters B
Online Access:http://www.sciencedirect.com/science/article/pii/S0370269322000880