General single field inflation with large positive non-Gaussianity

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Published 28 March 2008 IOP Publishing Ltd
, , Citation Miao Li et al JCAP03(2008)028 DOI 10.1088/1475-7516/2008/03/028

1475-7516/2008/03/028

Abstract

Recent analysis of the WMAP three-year data suggests in the WMAP convention. It is necessary to make sure whether general single field inflation can produce a large positive fNL before turning to other scenarios. We give some examples to generate a large positive fNLequil in general single field inflation. Our models are different from ghost inflation. Due to the appearance of non-conventional kinetic terms, can be realized in single field inflation.

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10.1088/1475-7516/2008/03/028