Killing Tensors and Conformal Killing Tensors from Conformal Killing Vectors
نویسندگان
چکیده
Koutras has proposed some methods to construct reducible proper conformal Killing tensors and Killing tensors (which are, in general, irreducible) when a pair of orthogonal conformal Killing vectors exist in a given space. We give the completely general result demonstrating that this severe restriction of orthogonality is unnecessary. In addition we correct and extend some results concerning Killing tensors constructed from a single conformal Killing vector. A number of examples demonstrate how it is possible to construct a much larger class of reducible proper conformal Killing tensors and Killing tensors than permitted by the Koutras algorithms. In particular, by showing that all conformal Killing tensors are reducible in conformally flat spaces, we have a method of constructing all conformal Killing tensors and hence all the Killing tensors (which will in general be irreducible) of conformally flat spaces using their conformal Killing vectors. PACS numbers: 0420, 0240 § Present address: Institute of Astronomy and Astrophysics, Dept. of Theoretical Astrophysics, University of Tübingen, Auf der Morgenstelle 10 C, D-72076 Tübingen, Germany.
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