Semiclassical Cosmological Perturbations Generated during Inflation

Details Semiclassical Cosmological Perturbations Generated during Inflation Semiclassical Cosmological Perturbations Generated during Inflation

2000-05-08

arxiv.org/abs/gr-qc/0005023v1

Int.J.Theor.Phys.39:1831-1839,2000

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

5 pages, RevTeX. To appear in the proceedings of the 4th Peyresq meeting

Scientific paper

10.1023/A:1003641714822

Environment interaction may induce stochastic semiclassical dynamics in open quantum systems. In the gravitational context, stress-energy fluctuations of quantum matter fields give rise to a stochastic behaviour in the spacetime geometry. Einstein-Langevin equation is a suitable tool to take these effects into account when addressing the back-reaction problem in semiclassical gravity. We analyze within this framework the generation of gravitational fluctuations during inflation, which are of great interest for large-scale structure formation in cosmology.

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