期刊
PHYSICS LETTERS B
卷 538, 期 3-4, 页码 213-222出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/S0370-2693(02)02004-X
关键词
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We derive the power spectrum P(k) of the density perturbations produced during inflation up to second-order corrections in the standard slow-roll approximation for an inflaton with more than one degree of freedom. We also present the spectral index n up to first-order corrections including previously missing terms, and the running dn/d Ink to leading order. (C) 2002 Published by Elsevier Science B.V.
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