A Single Field Inflation Model with Large Local Non-Gaussianity
High Energy Physics - Theory
2015-06-12 v2 Cosmology and Nongalactic Astrophysics
Abstract
A detection of large local form non-Gaussianity is considered to be able to rule out all single field inflation models. This statement is based on a single field consistency condition. Despite the awareness of some implicit assumptions in the derivation of this condition and the demonstration of corresponding examples that illustrate these caveats, to date there is still no explicit and self-consistent model which can serve as a counterexample to this statement. We present such a model in this Letter.
Keywords
Cite
@article{arxiv.1301.5699,
title = {A Single Field Inflation Model with Large Local Non-Gaussianity},
author = {Xingang Chen and Hassan Firouzjahi and Mohammad Hossein Namjoo and Misao Sasaki},
journal= {arXiv preprint arXiv:1301.5699},
year = {2015}
}
Comments
Minor revisions, new references added, EPL journal published version