Gauge - invariant fluctuations of the metric in stochastic inflation

Details Gauge - invariant fluctuations of the metric in stochastic inflation Gauge - invariant fluctuations of the metric in stochastic inflation

1999-11-08

arxiv.org/abs/gr-qc/9911028v2

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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