On Perturbation Spectra of N-flation

Details On Perturbation Spectra of N-flation On Perturbation Spectra of N-flation

2006-06-08

arxiv.org/abs/gr-qc/0606034v3

Phys.Rev.D74:047302,2006

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

3 pages, refs. added, comments added, typos corrected, abstract changed, to publish in PRD brief report

Scientific paper

10.1103/PhysRevD.74.047302

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.

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