On Perturbation Spectra of N-flation
Abstract
Description
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.
3 pages, refs. added, comments added, typos corrected, abstract changed, to publish in PRD brief report
3 pages, refs. added, comments added, typos corrected, abstract changed, to publish in PRD brief report