Gravitino problem in inflation driven by inflaton-polonyi Kähler coupling

Fuminori Hasegawa, Kazunori Nakayama, Takahiro Terada*, Yusuke Yamada

*この研究の対応する著者

研究成果: Article査読

9 被引用数 (Scopus)

抄録

We discuss the cosmological gravitino problem in inflation models in which the inflaton potential is constructed from Kähler potential rather than superpotential: a representative model is D3‾-induced geometric inflation. A critical ingredient in this type of models is the coupling of the inflaton and Polonyi (supersymmetry-breaking) field in the Kähler potential, which is needed to build the inflaton potential. We point out the same coupling let the inflaton dominantly decay into a pair of inflatino and gravitino causing the gravitino problem. We propose some possible solutions to this problem.

本文言語English
ページ(範囲)270-274
ページ数5
ジャーナルPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
777
DOI
出版ステータスPublished - 2018 2月 10
外部発表はい

ASJC Scopus subject areas

  • 核物理学および高エネルギー物理学

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