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arXiv · 2010.06001

Non-Gaussianity after many-field reheating

Pedro Carrilho·David Mulryne·John Ronayne
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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.

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Pedro Carrilho, David Mulryne, John Ronayne. 2020-10-12. Non-Gaussianity after many-field reheating. https://doi.org/10.1103/physrevd.103.083532

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