Any BV-module with a cocycle yields an L∞-algebra of observables, and constraint-triple reduction of that algebra recovers and explains the multisymplectic reduction of Blacker, Miti and Ryvkin.
Constraint Vector Bundles and Reduction of Lie (Bi-)Algebroids
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abstract
We present a framework for the reduction of various geometric structures extending the classical coisotropic Poisson reduction. For this we introduce constraint manifolds and constraint vector bundles. A constraint Serre-Swan theorem is proven, identifying constraint vector bundles with certain finitely generated projective modules, and a Cartan calculus for constraint differentiable forms and multivector fields is introduced. All of these constructions will be shown to be compatible with reduction. Finally, we apply this to obtain a reduction procedure for Lie (bi-)algebroids and Dirac manifolds.
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Multisymplectic observable reduction using constraint triples
Any BV-module with a cocycle yields an L∞-algebra of observables, and constraint-triple reduction of that algebra recovers and explains the multisymplectic reduction of Blacker, Miti and Ryvkin.