0 O ct 1 99 8 Computation of the conformal algebra of 1 + 3 decomposable space - times
نویسنده
چکیده
The conformal algebra of a 1+3 decomposable spacetime can be computed from the Conformal Killing Vectors (CKV) of the 3-space. It is shown that the general form of such a 3-CKV is the sum of a gradient CKV and a Killing or homothetic 3vector. It is proved that spaces of constant curvature always admit such conformal Killing vectors. As an example the complete conformal algebra of a Gödel type spacetime is computed. Finally it is shown that this method can be extended to compute the conformal algebra of more general non-decomposable spacetimes. PACS numbers: 0420J.9530L
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