Dirac structures, moment maps and quasi-Poisson manifolds

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We extend the correspondence between Poisson maps and actions of symplectic groupoids, which generalizes the one between momentum maps and hamiltonian actions, to the realm of Dirac geometry. As an example, we show how hamiltonian quasi-Poisson manifolds fit into this framework by constructing an ``inversion'' procedure relating quasi-Poisson bivectors to twisted Dirac structures.
36 pages. Typos and signs fixed. To appear in Progress in Mathematics, Festschrift in honor of Alan Weinstein, Birkauser

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Differential Geometry, Mathematical Physics, Symplectic Geometry

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http://salesiana.dossiersoluciones.com/handle/123456789/69008

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/math/0310445
 http://arxiv.org/abs/math/0310445

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arXiv