Moduli Decays and Gravitinos
High Energy Physics - Phenomenology
2009-11-11 v3
Abstract
One proposed solution of the moduli problem of string cosmology requires that the moduli are quite heavy, their decays reheating the universe to temperatures above the scale of nucleosynthesis. In many of these scenarios, the moduli are approximately supersymmetric; it is then crucial that the decays to gravitinos are helicity suppressed. In this paper, we discuss situations where these decays are, and are not, suppressed. We also comment on a possible gravitino problem from inflaton decay.
Keywords
Cite
@article{arxiv.hep-ph/0604140,
title = {Moduli Decays and Gravitinos},
author = {Michael Dine and Ryuichiro Kitano and Alexander Morisse and Yuri Shirman},
journal= {arXiv preprint arXiv:hep-ph/0604140},
year = {2009}
}
Comments
16 pages, version to appear in Physical Review D