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arXiv · 1402.1856

Suppressed Non-Gaussianity in the Curvaton Model

Kyohei Mukaida·Kazunori Nakayama·Masahiro Takimoto
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Abstract

We show that the local type non-Gaussianity in a class of curvaton models is suppressed, i.e. the non-linearity parameters f_{NL} and those related with higher order statistics can be at most O(1), even if the curvaton energy density is subdominant at the decay. This situation is naturally realized in a very simple curvaton potential with quadratic term plus quartic term.

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Kyohei Mukaida, Kazunori Nakayama, Masahiro Takimoto. 2014-06-04. Suppressed Non-Gaussianity in the Curvaton Model. https://doi.org/10.1103/physrevd.89.123515

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