Non-commutative Integrability, Moment Map and Geodesic Flows

Abstract

The purpose of this paper is to discuss the relationship between commutative and non-commutative integrability of Hamiltonian systems and to construct new examples of integrable geodesic flows on Riemannian manifolds. In particular, we prove that the geodesic flow of the bi-invariant metric on any bi-quotient of a compact Lie group is integrable in non-commutative sense by means of polynomial integrals, and therefore, in classical commutative sense by means of $C^{\infty }$--smooth integrals.

19 pages, minor changes, to appear in Annals of Global Analysis and Geometry

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