Axion monodromy inflation with multi-natural modulations

Tetsutaro Higaki, Tatsuo Kobayashi, Osamu Seto, Yuya Yamaguchi

研究成果: Article査読

24 被引用数 (Scopus)

抄録

We study parameter space in the axion monodromy inflation corrected by dynamically generated terms involving with the axion. The potential has the linear term with multiple sinusoidal functions, which play a role in generating modulations. We show that this potential leads both to a large tensor-to-scalar ratio rT ∼ 0.16 and to a large negative running of spectral index αs ∼ - (0.02 -0.03), ameliorating the tension between the result of the PLANCK and that of the BICEP2. To realize these results, a small hierarchy among dynamical scales is required whereas the decay constants in sinusoidal functions remain sub-Planckian in this model. We discuss also reheating process after the inflation in a bottom-up approach.

本文言語English
論文番号025
ジャーナルJournal of Cosmology and Astroparticle Physics
2014
10
DOI
出版ステータスPublished - 2014 10 1
外部発表はい

ASJC Scopus subject areas

  • 天文学と天体物理学

フィンガープリント

「Axion monodromy inflation with multi-natural modulations」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル