The Gravitino-Overproduction Problem in Inflaton Decay
High Energy Physics - Phenomenology
2008-11-26 v1
Abstract
We show that the gravitino-overproduction problem is prevalent among inflation models in supergravity. An inflaton field generically acquires (effective) non-vanishing auxiliary field, if the Kahler potential is non-minimal. The inflaton field then decays into a pair of the gravitinos, thereby severely constraining many of the inflation models especially in the case of the gravity-mediated SUSY breaking.
Cite
@article{arxiv.hep-ph/0611166,
title = {The Gravitino-Overproduction Problem in Inflaton Decay},
author = {Masahiro Kawasaki and Fuminobu Takahashi and T. T. Yanagida},
journal= {arXiv preprint arXiv:hep-ph/0611166},
year = {2008}
}
Comments
4 pages, 1 figre; to appear in Proceedings of SUSY06, the 14th International Conference on Supersymmetry and the Unification of Fundamental Interactions, UC Irvine, California, 12-17 June 2006