Observations on interfacing loop quantum gravity with cosmology
General Relativity and Quantum Cosmology
2015-12-16 v1
Abstract
A simple idea of relating the LQG and LQC degrees of freedom is discussed in context of toroidal Bianchi I model. The idea is an expansion of the construction originally introduced by Ashtekar and Wilson-Ewing and relies on explicit averaging of certain sub-class of spin-networks over the subgroup of the diffeomorphisms remaining after the gauge fixing used in homogeneous LQC. It is based on the set of clearly defined principles, thus is a convenient tool to control the emergence and behavior of the cosmological degrees of freedom in studies of dynamics in canonical LQG. Relating the proposed LQG-LQC interface with some results on black hole entropy suggests a modification to the area gap value currently used in LQC.
Cite
@article{arxiv.1411.0323,
title = {Observations on interfacing loop quantum gravity with cosmology},
author = {Tomasz Pawłowski},
journal= {arXiv preprint arXiv:1411.0323},
year = {2015}
}
Comments
RevRex4-1, BibTex, 20pp