Bispectrum at NLO in single field inflation: conservation and squeezed limit

Abstract In a recent paper, we computed the bispectrum of primordial density perturbations in CMB to second order in the slow-roll parameters of single field inflation, and found logarithmic infrared contributions that diverge in both large physical distances and squeezed limit where one momentum va...

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Bibliographic Details
Main Authors: Ignatios Antoniadis, Jules Cunat, Auttakit Chatrabhuti, Hiroshi Isono
Format: Article
Language:English
Published: SpringerOpen 2025-05-01
Series:European Physical Journal C: Particles and Fields
Online Access:https://doi.org/10.1140/epjc/s10052-025-14202-0
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