New leading contributions to non-gaussianity in single field inflation

Autor:	Antoniadis, Ignatios, Chatrabhuti, Auttakit, Cunat, Jules, Isono, Hiroshi
Rok vydání:	2024
Předmět:	High Energy Physics - Theory Astrophysics - Cosmology and Nongalactic Astrophysics General Relativity and Quantum Cosmology High Energy Physics - Phenomenology
Druh dokumentu:	Working Paper
Popis:	We compute the bispectrum of primordial density perturbations in CMB to second order in the slow-roll parameters of single field inflation. We found a large logarithmic contribution which is at least of the same order as the leading order result and can lead to an enhancement by an order of magnitude in a large class of models, including hilltop inflation. Comment: 60 pages. 4 appendices
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2412.06616 Zobrazit plný text záznamu View this record from Arxiv