Moduli-Induced Gravitino Problem
高能物理 - 唯象学
2008-11-26 v2 天体物理学
高能物理 - 理论
摘要
We investigate the cosmological moduli problem by studying a modulus decay in detail and find that the branching ratio of the gravitino production is generically of O(0.01-1), which causes another cosmological disaster. Consequently, the cosmological moduli problem cannot be solved simply by making the modulus mass heavier than 100 TeV. We also illustrate our results by explicitly calculating the branching ratio into the gravitinos in the mixed modulus--anomaly/KKLT- and racetrack-type models.
引用
@article{arxiv.hep-ph/0602061,
title = {Moduli-Induced Gravitino Problem},
author = {Motoi Endo and Koichi Hamaguchi and Fuminobu Takahashi},
journal= {arXiv preprint arXiv:hep-ph/0602061},
year = {2008}
}
备注
5 pages, 1 figure. v2: minor changes, note added