The projector on physical states in loop quantum gravity

Details The projector on physical states in loop quantum gravity The projector on physical states in loop quantum gravity

1998-06-30

arxiv.org/abs/gr-qc/9806121v2

Phys.Rev. D59 (1999) 104015

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

15 pages, 2 figures, substantially revised version

Scientific paper

10.1103/PhysRevD.59.104015

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.

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