Deformation Quantization of Lagrangian Fiber Bundles
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Let (M, \om) be a symplectic manifold. A Lagrangian fiber bundle π: M -> B determines a completely integrable system on M. First integrals of this system are the pull-backs of functions on the base of the bundle. We show that for each Lagrangian fiber bundle πthere exist star products on C^\infty(M)[[h]] which do not deform the pointwise multiplication on the subalgebra π^*(C^\infty (B)) [[h]]. The set of equivalence classes of such star products is in bijection with formal deformations of the symplectic structure \om for which π: M -> B remains Lagrangian taken modulo formal symplectomorphisms of M.
24 pages, Latex2e, corrected typos
24 pages, Latex2e, corrected typos