Warm inflation and scalar perturbations of the metric

Authors
Bellini, M
Citation
M. Bellini, Warm inflation and scalar perturbations of the metric, GEN RELAT G, 33(1), 2001, pp. 127-143
Citations number
30
Categorie Soggetti
Physics
Journal title
GENERAL RELATIVITY AND GRAVITATION
ISSN journal
00017701 → ACNP
Volume
33
Issue
1
Year of publication
2001
Pages
127 - 143
Database
ISI
SICI code
0001-7701(200101)33:1<127:WIASPO>2.0.ZU;2-H
Abstract
A second-order expansion for the quantum fluctuations of the matter field w as considered in the framework of the warm inflation scenario. The friction and Hubble parameters were expanded by means of a semiclassical approach. The fluctuations of the Hubble parameter generates fluctuations of the metr ic. These metric fluctuations produce an effective term of curvature. The p ower spectrum for the metric fluctuations can be calculated on the infrared sector.