Can causal dynamical triangulations probe factor-ordering issues?
Abstract
The causal dynamical triangulations (CDT) program has for the first time allowed for path-integral computation of correlation functions in full general relativity without symmetry reductions and taking into account Lorentzian signature. One of the most exciting recent results in CDT is the strong agreement of these computations with (minisuperspace) path integral calculations in quantum cosmology. Herein I will describe my current project to compute minisuperspace (Friedman-Robertson-Walker) path integrals with a range of different measures corresponding to various factor orderings of the Friedman-Robertson-Walker Hamiltonian. The aim is to compare with CDT results and ask whether CDT can shed light on factor-ordering ambiguities in quantum cosmology models.
Cite
@article{arxiv.0910.2117,
title = {Can causal dynamical triangulations probe factor-ordering issues?},
author = {R L Maitra},
journal= {arXiv preprint arXiv:0910.2117},
year = {2010}
}
Comments
12 pages. Presented at the XLIX Cracow School of Theoretical Physics, "Non-perturbative Gravity and Quantum Chromodynamics," Zakopane, Poland, May 31 - June 10, 2009 Version 2, references updated