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arXiv · 1211.3535

Non-Gaussianity from Attractor Curvaton

Keisuke Harigaya·Masahiro Ibe·Masahiro Kawasaki·Tsutomu T. Yanagida
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Abstract

We propose a curvaton model in which the initial condition of the curvaton oscillation is determined by its attractor behavior during inflation. Assuming a chaotic inflation model, we find that the initial condition determined by the attractor behavior is appropriate to generate a sizable non-Gaussianity contribution to the curvature perturbation, which will be tested in the foreseeable future. Implications on the thermal history of the universe and on particle physics models are also discussed.

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Keisuke Harigaya, Masahiro Ibe, Masahiro Kawasaki, Tsutomu T. Yanagida. 2012-11-15. Non-Gaussianity from Attractor Curvaton. https://doi.org/10.1103/physrevd.87.063514

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