Constraints on small-field axion inflation

Kobayashi, Tatsuo; Oikawa, Akane; Omoto, Naoya et al.

Physical review D, 2017, 95(6), 63514

Permalink : https://hdl.handle.net/2115/65536

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PhysRevD95 063514	pdf	349 KB	649

アクセス権	open access
URI	https://hdl.handle.net/2115/65536
タイトル	Constraints on small-field axion inflation
著者	Kobayashi, Tatsuo ; Oikawa, Akane ; Omoto, Naoya ; Otsuka, Hajime ; Saga, Ikumi
e-Rad_Researcher 60322153 著者名 Kobayashi, Tatsuo
著者名 Oikawa, Akane
著者名 Omoto, Naoya
著者名 Otsuka, Hajime
著者名 Saga, Ikumi
言語	英語
発行日	2017-03-15
出版者	American Physical Society (APS)
収録物名	Physical review D
巻(号)	95(6)
ページ	63514
抄録	We study general class of small-field axion inflations, which are the mixture of polynomial and sinusoidal functions suggested by the natural and axion monodromy inflations. The axion decay constants leading to the successful axion inflations are severely constrained in order not to spoil the big bang nucleosynthesis and overproduce the isocurvature perturbation originating from the QCD axion. We in turn find that the cosmologically favorable axion decay constants are typically of order the grand unification scale or the string scale, which is consistent with the prediction of closed-string axions.
資源タイプ	学術雑誌論文
出版タイプ	Version of Record
権利情報	©2017 American Physical Society
PISSN	2470-0010
関連情報 (isIdenticalTo)	出版社版DOI https://doi.org/10.1103/PhysRevD.95.063514