Perturbations in stochastic inflation

被引：25
|
作者：
Kunze, Kerstin E.
机构：
[1] Univ Salamanca, Dept Fis Fundamental, E-37008 Salamanca, Spain
[2] Univ Salamanca, IUFFyM, E-37008 Salamanca, Spain
来源：
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS | 2006年 / 07期
关键词：
cosmological perturbation theory; inflation;
D O I：
10.1088/1475-7516/2006/07/014
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
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.
引用
收藏
页数：12
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