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arXiv · 1309.2917

Higher order non-linear parameters with PLANCK

Jinn-Ouk Gong·Tomo Takahashi
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Abstract

We investigate how higher order non-linear parameters affect lower order ones through loop effects. We calculate the loop corrections up to two-loops and explicitly show that the tree contribution is stable against loop terms in most cases. We argue that, nevertheless, observational constraints on non-linear parameters such as fNL and tauNL can also give a limit even for higher order ones due to the loop contribution. We discuss these issues both for single-source and multi-source cases.

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Jinn-Ouk Gong, Tomo Takahashi. 2013-12-30. Higher order non-linear parameters with PLANCK. https://doi.org/10.1103/physrevd.89.023516

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