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NON-GAUSSIANITY OF GENERAL MULTIPLE-FIELD INFLATIONARY MODELS

CHENG-YI SUN

Department of Physics, The Graduate School of the Chinese Academy of Sciences, Beijing 10049, China

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and

DE-HAI ZHANG

Department of Physics, The Graduate School of the Chinese Academy of Sciences, Beijing 10049, China

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https://doi.org/10.1142/S0218271806008887Cited by:7 (Source: Crossref)

Abstract

Using the "δN-formalism," we obtain the expression of the non-Gaussianity of multiple-field inflationary models with the non-trivial field-space metric. Further, we have rewritten the result by using the slow-rolling approximation.

Keywords:

PACS: 98.80.Cq, 98.80.Jk, 04.20.Gz

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