Generalized Symmetries of the Einstein Equations

Details Generalized Symmetries of the Einstein Equations Generalized Symmetries of the Einstein Equations

1993-03-20

arxiv.org/abs/gr-qc/9303024v1

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

22 pages, LaTeX document, report FJE-93-002

Scientific paper

10.1063/1.530302

We reformulate the symmetries of Gurses [Phys. Rev. Lett. 70, 367 (1993)] in a more abstract, more geometrical manner. The type (b) transformation of \gurses\ is related to a diffeomorphism of the differentiable manifold onto itself. The type (c) symmetry is replaced by a more general type (c-bar) symmetry that has the nice property that the commutator of a type (c-bar) generator with a type (a) generator is itself of type (c-bar). We identify a differential constraint that transformations of type (c) and (c-bar) must satisfy, and which, in our opinion, may severely limit the usefulness of these transformations.

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