Dirac observables and the phase space of general relativity

Details Dirac observables and the phase space of general relativity Dirac observables and the phase space of general relativity

2001-12-20

arxiv.org/abs/gr-qc/0112051v2

Gen.Rel.Grav. 34 (2002) 1685-1699

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

Latex,18 pages,no figures

Scientific paper

In the canonical approach to general relativity it is customary to parametrize the phase space by initial data on spacelike hypersurfaces. However, if one seeks a theory dealing with observations that can be made by a single localized observer, it is natural to use a different description of the phase space. This results in a different set of Dirac observables from that appearing in the conventional formulation. It also suggests a possible solution to the problem of time, which has been one of the obstacles to the development of a satisfactory quantum theory of gravity.

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