Polynomial chaotic inflation in supergravity

Kazunori Nakayama, Fuminobu Takahashi, Tsutomu T. Yanagida

研究成果: Article査読

54 被引用数 (Scopus)

抄録

We present a general polynomial chaotic inflation model in supergravity, for which the predicted spectral index and tensor-to-scalar ratio can lie within the 1σ region allowed by the Planck results. Most importantly, the predicted tensor-to-scalar ratio is large enough to be probed in the on-going and future B-mode experiments. We study the inflaton dynamics and the subsequent reheating process in a couple of specific examples. The non-thermal gravitino production from the inflaton decay can be suppressed in a case with a discrete Z2 symmetry. We find that the reheating temperature can be naturally as high as O(109-10) GeV, sufficient for baryon asymmetry generation through (non-)thermal leptogenesis.

本文言語English
論文番号038
ジャーナルJournal of Cosmology and Astroparticle Physics
2013
8
DOI
出版ステータスPublished - 2013 8

ASJC Scopus subject areas

  • 天文学と天体物理学

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