A note on the moduli-induced gravitino problem
High Energy Physics - Phenomenology
2009-01-08 v4 High Energy Physics - Theory
Abstract
The cosmological moduli problem has been recently reconsidered. Papers [1,2] show that even heavy moduli (m_\phi > 10^5 GeV) can be a problem for cosmology if a branching ratio of the modulus into gravitini is large. In this paper, we discuss the tachyonic decay of moduli into the Standard Model's degrees of freedom, e.g. Higgs particles, as a resolution to the moduli-induced gravitino problem. Rough estimates on model dependent parameters set a lower bound on the allowed moduli at around 10^8 ~ 10^9 GeV.
Cite
@article{arxiv.hep-ph/0703319,
title = {A note on the moduli-induced gravitino problem},
author = {Natalia Shuhmaher},
journal= {arXiv preprint arXiv:hep-ph/0703319},
year = {2009}
}
Comments
6 pages, references added, identical to the published version