Violation of non-Gaussianity consistency relation in a single field inflationary model
Cosmology and Nongalactic Astrophysics
2015-06-11 v2 High Energy Physics - Theory
Abstract
In this paper we present a simple, toy model of single field inflation in which the standard non-Gaussianity consistency condition is violated. In this model the curvature perturbations on super-horizon scales are not conserved and the decaying modes of perturbations are not negligible in the non-atractor phase. As a result a large local non-Gaussianity can be obtained in the squeezed limit which violates the standard non-Gaussianity consistency condition for the single field models.
Keywords
Cite
@article{arxiv.1210.3692,
title = {Violation of non-Gaussianity consistency relation in a single field inflationary model},
author = {Mohammad Hossein Namjoo and Hassan Firouzjahi and Misao Sasaki},
journal= {arXiv preprint arXiv:1210.3692},
year = {2015}
}
Comments
4 pages, minor revision, published version