The projector on physical states in loop quantum gravity
General Relativity and Quantum Cosmology
2016-08-25 v2 High Energy Physics - Theory
Abstract
We construct the operator that projects on the physical states in loop quantum gravity. To this aim, we consider a diffeomorphism invariant functional integral over scalar functions. The construction defines a covariant, Feynman-like, spacetime formalism for quantum gravity and relates this theory to the spin foam models. We also discuss how expectation values of physical quantity can be computed.
Cite
@article{arxiv.gr-qc/9806121,
title = {The projector on physical states in loop quantum gravity},
author = {Carlo Rovelli},
journal= {arXiv preprint arXiv:gr-qc/9806121},
year = {2016}
}
Comments
15 pages, 2 figures, substantially revised version