Decoherence Functional and Inhomogeneities in the Early Universe
General Relativity and Quantum Cosmology
2009-10-22 v1
Abstract
We investigate the quantum to classical transition of small inhomogeneous fluctuations in the early Universe using the decoherence functional of Gell-Mann and Hartle. We study two types of coarse graining; one due to coarse graining the value of the scalar field and the other due to summing over an environment. We compare the results with a previous study using an environment and the off-diagonal rule proposed by Zurek. We show that the two methods give different results.
Keywords
Cite
@article{arxiv.gr-qc/9303036,
title = {Decoherence Functional and Inhomogeneities in the Early Universe},
author = {R. Laflamme and A. Matacz},
journal= {arXiv preprint arXiv:gr-qc/9303036},
year = {2009}
}
Comments
15 pages in plain tex