Moduli Decays and Gravitinos | Zendy

Michael Dine | Zendy; Ryuichiro Kitano | Zendy; Alexander Morisse | Zendy; Yuri Shirman | Zendy

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Moduli Decays and Gravitinos

Author(s) -

Michael Dine,

Ryuichiro Kitano,

Alexander Morisse,

Yuri Shirman

Publication year - 2006

Publication title -

osti oai (u.s. department of energy office of scientific and technical information)

Language(s) - English

Resource type - Reports

DOI - 10.2172/881532

Subject(s) - gravitino , physics , moduli , particle physics , nucleosynthesis , cosmology , helicity , string (physics) , supersymmetry , supergravity , universe , theoretical physics , nuclear physics , astrophysics , quantum mechanics , nuclear reaction

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

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