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arXiv · 1004.0808

The trispectrum in ghost inflation

Qing-Guo Huang
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Abstract

We calculate the trispectrum in ghost inflation where both the contact diagram and scale-exchange diagram are taken into account. The shape of trispectrum is discussed carefully and we find that the local form is absent in ghost inflation. In general, for the non-local shape trispectrum there are not analogous parameters to $\tau_{NL}^{loc.}$ and $g_{NL}^{loc.}$ which can completely characterize the size of local form trispectrum.

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Qing-Guo Huang. 2010-04-06. The trispectrum in ghost inflation. https://doi.org/10.1088/1475-7516/2010/07/025

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