Perturbations in stochastic inflation

Details Perturbations in stochastic inflation Perturbations in stochastic inflation

2006-03-21

arxiv.org/abs/astro-ph/0603575v2

JCAP 0607 (2006) 014

Astronomy and Astrophysics

Astrophysics

11 pages. Section 2 revised and extended. New figures

Scientific paper

10.1088/1475-7516/2006/07/014

The perturbative approach to stochastic inflation is used to determine the spectrum of density fluctuations and gravitational waves due to the coarse grained field. The amplitude of the curvature fluctuation spectrum, the spectral index and the running of the spectral index are in general found to be smaller than in the standard approach to inflation. Furthermore, the amount of non-gaussianity due to the second order perturbation is estimated.

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