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arXiv · 1907.02951

A simple, exact, model of quasi-single field inflation

Yvette Welling
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Abstract

In this note we present a simple but exact model of quasi-single field inflation \cite{Chen:2009zp, Chen:2009we}, in which the couplings between perturbations are completely controlled, and for instance can be made constant with any desired value. This provides a way to numerically implement quasi-single field inflation and to test its predictions in various regimes. We confirm that the numerics agree to good accuracy with the analytical predictions for the isosceles bispectrum and the full shape function.

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Yvette Welling. 2019-07-04. A simple, exact, model of quasi-single field inflation. https://doi.org/10.1103/physrevd.101.063535

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