Supersymmetric flat directions and resonant gravitino production
Cosmology and Nongalactic Astrophysics
2014-08-06 v2 High Energy Physics - Phenomenology
Abstract
We study resonant gravitino production in the early Universe in the presence of SUSY flat directions whose large VEVs break some but not all gauge symmetries. We find that for a large region of parameter space the gravitino abundance is several orders of magnitude larger than the cosmological upper bound. Since flat directions with large VEVs are generically expected in supersymmetric theories this result further exacerbates the gravitino problem.
Keywords
Cite
@article{arxiv.1310.5872,
title = {Supersymmetric flat directions and resonant gravitino production},
author = {Namit Mahajan and Raghavan Rangarajan and Anjishnu Sarkar},
journal= {arXiv preprint arXiv:1310.5872},
year = {2014}
}
Comments
5 pages, matches the published version. Minor changes in the text; references added