Astronomy and Astrophysics – Astrophysics – General Relativity and Quantum Cosmology
Scientific paper
1996-04-22
Class.Quant.Grav.14:A83-A92,1997
Astronomy and Astrophysics
Astrophysics
General Relativity and Quantum Cosmology
17 pages
Scientific paper
10.1088/0264-9381/14/1A/007
We study space-time Killing vectors in terms of their "lapse and shift" relative to some spacelike slice. We give a necessary and sufficient condition in order for these lapse-shift pairs, which we call Killing initial data (KID'S), to form a Lie algebra under the bracket operation induced by the Lie commutator of vector fields on space-time. This result is applied to obtain a theorem on the periodicity of orbits for a class of Killing vector fields in asymptotically flat space-times.
Beig Robert
Chrusciel Piotr T.
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