Stochastic Dynamics of Coarse-Grained Quantum Fields in Inflationary Universe
General Relativity and Quantum Cosmology
2009-10-22 v1
Abstract
It is shown how coarse-graining of quantum field ^M theory in de Sitter space leads to the emergence of a classical ^M stochastic description as an effective theory in the infra-red regime. ^M The quantum state of the coarse-grained scalar field is found to be a highly^M squeezed coherent state, whose center performs a random walk on a^M bundle of classical trajectories.^M
Keywords
Cite
@article{arxiv.gr-qc/9401030,
title = {Stochastic Dynamics of Coarse-Grained Quantum Fields in Inflationary Universe},
author = {Milan Mijic},
journal= {arXiv preprint arXiv:gr-qc/9401030},
year = {2009}
}
Comments
23 pages, Very Plain TeX