Moduli-induced gravitino problem

Motoi Endo, Koichi Hamaguchi, Fuminobu Takahashi

Research output: Contribution to journalArticlepeer-review

121 Citations (Scopus)


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 model.

Original languageEnglish
Article number211301
JournalPhysical review letters
Issue number21
Publication statusPublished - 2006
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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