Moduli Decays and Gravitinos

Dine, Michael ; Kitano, Ryuichiro ; Morisse, Alexander ; Shirman, Yuri

Stanford Linear Accelerator Center

关键词: Decay;    71 Classical And Quantum Mechanics, General Physics;    Cosmology;    Universe Phenomenology-Hep,Hepph;    Nucleosynthesis;   

DOI  :  10.2172/881532
RP-ID  :  SLAC-PUB-11805
RP-ID  :  AC02-76SF00515
RP-ID  :  881532

美国|英语

来源: UNT Digital Library

【 摘 要 】

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 inaton decay.