Gravitino problem in supergravity chaotic inflation and SUSY breaking scale after BICEP2

Kazunori Nakayama, Fuminobu Takahashi, Tsutomu T. Yanagida

研究成果: Article査読

9 被引用数 (Scopus)

抄録

Gravitinos are generically produced by inflaton decays, which place tight constraints on inflation models as well as supersymmetry breaking scale. We revisit the gravitino production from decays of the inflaton and the supersymmetry breaking field, based on a chaotic inflation model suggested by the recent BICEP2 result. We study cosmological constraints on thermally and non-thermally produced gravitinos for a wide range of the gravitino mass, and show that there are only three allowed regions of the gravitino mass: m3/2 ≲ 16eV, m3/2 ≃ 10-1000TeV and m3/21013GeV.

本文言語English
ページ(範囲)358-363
ページ数6
ジャーナルPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
734
DOI
出版ステータスPublished - 2014 6 27

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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