Curvaton in large field inflation

Tomohiro Fujita*, Masahiro Kawasaki, Shuichiro Yokoyama

*この研究の対応する著者

研究成果: Article査読

13 被引用数 (Scopus)

抄録

We comprehensively explore the quadratic curvaton models in the chaotic inflation. In the light of the BICEP2 result r 0.2, all model parameters and relevant observables are computed. It is found the curvaton field value is constrained into a narrow range, σ = (10-2-10-1) and the running of the spectral index is ns′-10-3. We show that if the curvaton is added, the models are heavily degenerated on the ns - r plane. However, introducing a new plane, the degeneracy can be resolved. To distinguish the curvaton models, precise measurements of not only r but also ns′ and the tensor tilt nT are required.

本文言語English
論文番号015
ジャーナルJournal of Cosmology and Astroparticle Physics
2014
9
DOI
出版ステータスPublished - 2014 9月 1
外部発表はい

ASJC Scopus subject areas

  • 天文学と天体物理学

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