Astronomy and Astrophysics – Astrophysics – General Relativity and Quantum Cosmology
Scientific paper
1999-11-08
Astronomy and Astrophysics
Astrophysics
General Relativity and Quantum Cosmology
4 pages, no figures, version accepted for publication in Physical Review D (as Brief Report)
Scientific paper
10.1103/PhysRevD.61.107301
I derive the stochastic equation for the perturbations of the metric for a gauge - invariant energy - momemtum - tensor (EMT) in stochastic inflation. A quantization for the field that describes the gauge - invariant perturbations for the metric is developed. In a power - law expansion for the universe the amplitude for these perturbations on a background metric could be very important in the infrared sector.
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