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arXiv 2000-05-08 DOI 10.1023/A:1003641714822 0 views

Semiclassical Cosmological Perturbations Generated during Inflation

Roura, Albert · Verdaguer, Enric

Original · EN

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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