Reduction of pre-Hamiltonian actions
arXiv:1507.08821 · doi:10.1016/j.geomphys.2016.03.017
Abstract
We prove a reduction theorem for the tangent bundle of a Poisson manifold endowed with a pre-Hamiltonian action of a Poisson Lie group . In the special case of a Hamiltonian action of a Lie group, we are able to compare our reduction to the classical Marsden-Ratiu reduction of . If the manifold is symplectic and simply connected, the reduced tangent bundle is integrable and its integral symplectic groupoid is the Marsden-Weinstein reduction of the pair groupoid .
18 pages, final version, to appear in Journal of Geometry and Physics