Moduli decays and gravitinos
Moduli decays and gravitinos
复制标题
模量衰减和引力
DOI:
--
复制
发表时间:
2006
期刊:
影响因子:
--
通讯作者:
Y. Shirman
中科院分区:
文献类型:
--
作者:
M. Dine;R. Kitano;A. Morisse;Y. Shirman
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.