Non-Gaussianity after many-field reheating
Cosmology and Nongalactic Astrophysics
2021-05-05 v1
Abstract
We numerically investigate reheating after quadratic inflation with up to 65 fields, focusing on the production of non-Gaussianity. We consider several sets of initial conditions, masses and decay rates. As expected we find that the reheating phase can have a significant effect on the non-Gaussian signal, but that for this number of fields a detectable level of non-Gaussianity requires the initial conditions, mass range and decay rates to be ordered in a particular way. We speculate on whether this might change in the N-flation limit.
Cite
@article{arxiv.2010.06001,
title = {Non-Gaussianity after many-field reheating},
author = {Pedro Carrilho and David Mulryne and John Ronayne},
journal= {arXiv preprint arXiv:2010.06001},
year = {2021}
}
Comments
8 pages, 3 figures