The Isaacson expansion in quantum cosmology
General Relativity and Quantum Cosmology
2010-11-01 v2
Abstract
This paper is an application of the ideas of the Born-Oppenheimer (or slow/fast) approximation in molecular physics and of the Isaacson (or short-wave) approximation in classical gravity to the canonical quantization of a perturbed minisuperspace model of the kind examined by Halliwell and Hawking. Its aim is the clarification of the role of the semiclassical approximation and the backreaction in such a model. Approximate solutions of the quantum model are constructed which are not semiclassical, and semiclassical solutions in which the quantum perturbations are highly excited.
Cite
@article{arxiv.gr-qc/9303016,
title = {The Isaacson expansion in quantum cosmology},
author = {Carsten Gundlach},
journal= {arXiv preprint arXiv:gr-qc/9303016},
year = {2010}
}
Comments
Revtex, 11 journal or 24 preprint pages. REPLACEMENT: A comment on previous work by Dowker and Laflamme is corrected. Utah preprint UU-REL-93/3/10