
A necessary condition that a St��ckel-Killing tensor of valence 2 be the contracted product of a Killing-Yano tensor of valence 2 with itself is re-derived for a Riemannian manifold. This condition is applied to the generalized Euclidean Taub-NUT metrics which admit a Kepler type symmetry. It is shown that in general the St��ckel-Killing tensors involved in the Runge-Lenz vector cannot be expressed as a product of Killing-Yano tensors. The only exception is the original Taub-NUT metric.
14 pages, LaTeX. Final version to appear in J.Phys.A:Math.Gen
High Energy Physics - Theory, Special Riemannian manifolds (Einstein, Sasakian, etc.), generalized Taub-NUT metrics, Killing-Yano tensor, High Energy Physics - Theory (hep-th), FOS: Physical sciences, Exact solutions to problems in general relativity and gravitational theory, General Relativity and Quantum Cosmology (gr-qc), Applications of global differential geometry to the sciences, General Relativity and Quantum Cosmology
High Energy Physics - Theory, Special Riemannian manifolds (Einstein, Sasakian, etc.), generalized Taub-NUT metrics, Killing-Yano tensor, High Energy Physics - Theory (hep-th), FOS: Physical sciences, Exact solutions to problems in general relativity and gravitational theory, General Relativity and Quantum Cosmology (gr-qc), Applications of global differential geometry to the sciences, General Relativity and Quantum Cosmology
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