Interpretation of the triad orientations in loop quantum cosmology
General Relativity and Quantum Cosmology
2013-01-23 v2
Abstract
Loop quantum cosmology allows for arbitrary superpositions of the triad variable. We show here how these superpositions can become indistinguishable from a classical mixture by the interaction with fermions. We calculate the reduced density matrix for a locally rotationally symmetric Bianchi I model and show that the purity factor for the triads decreases by decoherence. In this way, the universe assumes a definite orientation.
Cite
@article{arxiv.1210.0418,
title = {Interpretation of the triad orientations in loop quantum cosmology},
author = {Claus Kiefer and Christian Schell},
journal= {arXiv preprint arXiv:1210.0418},
year = {2013}
}
Comments
12 pages, 1 figure, additional conceptual and linguistic clarifications