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arXiv · 2412.06616

New leading contributions to non-gaussianity in single field inflation

Ignatios Antoniadis·Auttakit Chatrabhuti·Jules Cunat·Hiroshi Isono
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Abstract

We compute the bispectrum of primordial density perturbations in CMB to second order in the slow-roll parameters of single field inflation. We correct previous results and found that next-to-leading order corrections can be of the same order as the leading order result in a large class of models, including hilltop inflation.

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Ignatios Antoniadis, Auttakit Chatrabhuti, Jules Cunat, Hiroshi Isono. 2026-03-29. New leading contributions to non-gaussianity in single field inflation. https://doi.org/10.1140/epjc%2Fs10052-026-15452-2

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