A Proof for a Theorem of Wald in Arbitrary Dimensions

Details A Proof for a Theorem of Wald in Arbitrary Dimensions A Proof for a Theorem of Wald in Arbitrary Dimensions

2009-12-19

arxiv.org/abs/0912.3875v1

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

Part of author's B.Sc. Honors Thesis (NUS, 2003)

Scientific paper

Static, axisymmetric solutions form a large class of important black holes in classical GR. In four dimensions, the existence of their most general metric ansatz relies on the fact that two-dimensional subspaces of the tangent space at each point spanned by vectors orthogonal to the time-translation and rotation Killing fields are integrable. This was first proved by Wald via an application of Frobenius theorem. In this note, we furnish an elementary proof for this theorem by Wald in arbitrary dimensions which yields the metric ansatz for the most general solution of the D-dimensional vacuum Einstein equations that admits D-2 orthogonal and commuting Killing vector fields.

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