General Single Field Inflation with Large Positive Non - Gaussianity
نویسنده
چکیده
Recent analysis of the WMAP three year data reveals f local NL ≃ 86.8 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 f equil NL in general single field inflation. Our models are different from ghost inflation. Due to the appearance of non-conventional kinetic terms, f equil NL ≫ 1 can be realized in single field inflation.
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