Cosmology with quantum matter and a classical gravitational field: the approach of configuration-space ensembles
Abstract
I consider the formulation of hybrid cosmological models that consists of a classical gravitational field interacting with a quantized massive scalar field in the formalism of ensembles on configuration space. This is a viable approach that provides an alternative to semiclassical gravity. I discuss a particular, highly nonclassical solution in two approximations, minisuperspace and spherically-symmetric midisuperspace. In both cases, the coupling of the quantum scalar field and classical gravitational field leads to a cosmological model which has a quantized radius of the universe.
Keywords
Cite
@article{arxiv.1312.0435,
title = {Cosmology with quantum matter and a classical gravitational field: the approach of configuration-space ensembles},
author = {Marcel Reginatto},
journal= {arXiv preprint arXiv:1312.0435},
year = {2013}
}
Comments
21 pages. Presented at the Sixth International Workshop on Decoherence, Information, Complexity and Entropy DICE 2012, 17-21 September 2012, Castiglioncello, Italy. This article supersedes arXiv:0908.0752