Gravitational Observables and Local Symmetries

Details Gravitational Observables and Local Symmetries Gravitational Observables and Local Symmetries

1993-06-24

arxiv.org/abs/gr-qc/9306030v1

Phys.Rev.D48:2373-2376,1993

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

10 pages

Scientific paper

10.1103/PhysRevD.48.R2373

Using a recent classification of local symmetries of the vacuum Einstein
equations, it is shown that there can be no observables for the vacuum
gravitational field (in a closed universe) built as spatial integrals of local
functions of Cauchy data and their derivatives.

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