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Non-gaussianity in the strong regime of warm inflation

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Published 9 August 2011 Published under licence by IOP Publishing Ltd
, , Citation Ian G. Moss and Timothy Yeomans JCAP08(2011)009 DOI 10.1088/1475-7516/2011/08/009

1475-7516/2011/08/009

Abstract

The bispectrum of scalar mode density perturbations is analysed for the strong regime of warm inflationary models. This analysis generalises previous results by allowing damping terms in the inflaton equation of motion that are dependent on temperature. A significant amount of non-gaussianity emerges with constant (or local) non-linearity parameter fNL ∼ 20, in addition to the terms with non-constant fNL which are characteristic of warm inflation.

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10.1088/1475-7516/2011/08/009