Gravitational fields with a non Abelian bidimensional Lie algebra of symmetries
arXiv:gr-qc/0102112 · doi:10.1016/S0370-2693(01)00722-5
Abstract
Vacuum gravitational fields invariant for a bidimensional non Abelian Lie algebra of Killing fields, are explicitly described. They are parameterized either by solutions of a transcendental equation (the tortoise equation) or by solutions of a linear second order differential equation on the plane. Gravitational fields determined via the tortoise equation, are invariant for a 3-dimensional Lie algebra of Killing fields with bidimensional leaves. Global gravitational fields out of local ones are also constructed.
8 pagese, latex, no figures
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