Astronomy and Astrophysics – Astrophysics – General Relativity and Quantum Cosmology
Scientific paper
1996-07-21
Class.Quant.Grav.14:A31-A42,1997
Astronomy and Astrophysics
Astrophysics
General Relativity and Quantum Cosmology
18 pages, latex2e, no figures
Scientific paper
10.1088/0264-9381/14/1A/004
We generalize previous \cite{AiBa2} work on the classification of ($C^\infty$) symmetries of plane-fronted waves with an impulsive profile. Due to the specific form of the profile it is possible to extend the group of normal-form-preserving diffeomorphisms to include non-smooth transformations. This extension entails a richer structure of the symmetry algebra generated by the (non-smooth) Killing vectors.
Aichelburg Peter C.
Balasin Herbert
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