$g_{\rm NL}$ in the curvaton model constrained by PLANCK

Qing-Guo Huang

doi:10.1088/1475-7516/2013/05/030

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arXiv · 1303.6084

$g_{\rm NL}$ in the curvaton model constrained by PLANCK

Qing-Guo Huang

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Abstract

As a simplest extension to the mass-term curvaton model, the curvaton model with a polynomial potential can relax the restricted constraint from PLANCK due to the non-linear dynamics of curvaton field before it decays. We find that there is still a big room for producing a large negative $g_{\rm NL}$, but not positive $g_{\rm NL}$. For example, we only need around 10% "tuning" for $-g_{\rm NL}>10^4$.

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Qing-Guo Huang. 2013-05-15. $g_{\rm NL}$ in the curvaton model constrained by PLANCK. https://doi.org/10.1088/1475-7516%2F2013%2F05%2F030

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