Loop corrections to primordial non-Gaussianity
Cosmology and Nongalactic Astrophysics
2018-02-21 v3 General Relativity and Quantum Cosmology
High Energy Physics - Theory
Abstract
We discuss quantum gravitational loop effects to observable quantities such as curvature power spectrum and primordial non-Gaussianity of cosmic microwave background (CMB) radiation. We first review the previously shown case where one gets a time dependence for zeta-zeta correlator due to loop corrections. Then we investigate the effect of loop corrections to primordial non-Gaussianity of CMB. We conclude that, even with a single scalar inflaton, one might get a huge value for non-Gaussianity which would exceed the observed value by at least 30 orders of magnitude. Finally we discuss the consequences of this result for scalar driven inflationary models.
Cite
@article{arxiv.1601.01106,
title = {Loop corrections to primordial non-Gaussianity},
author = {Sibel Boran and E. O. Kahya},
journal= {arXiv preprint arXiv:1601.01106},
year = {2018}
}
Comments
7 pages, 3 figures, matches the published version in PRD