On Perturbation Spectra of N-flation
arXiv:gr-qc/0606034 · doi:10.1103/PhysRevD.74.047302
Abstract
In this note we study the adiabatic perturbation spectrum of N-flation with power law potential. We show that the scalar spectrum of N-flation is generally redder than that of its corresponding single field. The result obtained for that with unequal massive fields is consistent with the recent numerical investigation of Kim and Liddle.
arXiv comment3 pages, refs. added, comments added, typos corrected, abstract changed, to publish in PRD brief report
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