Warm inflation and scalar perturbations of the metric

Details Warm inflation and scalar perturbations of the metric Warm inflation and scalar perturbations of the metric

2000-07-31

arxiv.org/abs/gr-qc/0007083v2

Gen.Rel.Grav. 33 (2001) 127-143

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

10 pages, no figures, to be published in General Rel. and Gravitation

Scientific paper

A second-order expansion for the quantum fluctuations of the matter field was considered in the framework of the warm inflation scenario. The friction and Hubble parameters were expended by means of a semiclassical approach. The fluctuations of the Hubble parameter generates fluctuations of the metric. These metric fluctuations produce an effective term of curvature. The power spectrum for the metric fluctuations can be calculated on the infrared sector.

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