Work

Projector on physical states in loop quantum gravity

Year: 1999

Type: article

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 the physical quantity can be computed.

Source: Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields

DOI: 10.1103/physrevd.59.104015

Author: Carlo Rovelli

Institutions: Centre National de la Recherche Scientifique, University of Pittsburgh, Centre de Physique Théorique

Language: English

Topic: Noncommutative and Quantum Gravity Theories

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funders: National Science Foundation, Centre National de la Recherche Scientifique

OpenAlex ID: W2070533344

FWCI: 5.095

Cites: 51

Cited by: 99

Related to: 10