To the study of non-Gaussianity in two-field slow-roll inflation
Autor: | Koshelev, N. A. |
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Rok vydání: | 2013 |
Předmět: | |
Druh dokumentu: | Working Paper |
Popis: | The general expression for the second order large scale curvature perturbation in the form of a functional over a background solution is derived. The explicit expressions was obtained for two special forms of the inflationary potential. In the considered cases, it is shown that a significant level of non-Gaussianity can be generated during the super-Hubble evolution only if nonadiabatic perturbations are non-negligible at the end of inflation. Comment: 15 pages,v2: more careful consideration in section 4, abstract and conclusion corrected, references added |
Databáze: | arXiv |
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