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arXiv · 1910.01390

Non-Gaussianity in a general kind noncanonical warm inflation

Xiao-Min Zhang·Kai Li·Hong-Yang Ma·Qian Liu·Jian-Yang Zhu
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Abstract

The general kind noncanonical warm inflation is introduced and its total non-Gaussianity of perturbation on uniform energy density hypersurfaces is studied. The total non-Gaussianity contains two complementary parts: the three- and the four-point correlations. The three-point correlation part denoted by $f^{int}_{NL}$, comes from the three-point correlation of inflaton field, while the four-point correlation part, denoted by $f_{NL}^{δN}$, is the contribution due to the four-point correlation function of the inflaton field. The aforementioned two parts of non-Gaussianity in general noncanonical warm inflation are calculated and analysed respectively, and the comparisons and discussions of the two parts are finally carried out in this study.

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Xiao-Min Zhang, Kai Li, Hong-Yang Ma, Qian Liu, Jian-Yang Zhu. 2019-10-06. Non-Gaussianity in a general kind noncanonical warm inflation. https://doi.org/10.1103/physrevd.100.123521

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