Abstract
In this letter we study the non-trivial formal differentiable deformations of the Lie algebraN=C ∞(W, IR) whereW is a symplectic manifold. Under some assumptions (satisfied in particular forW=IR2n) we show that these deformations are all equivalent, up to a monomial change of the parameter, to one of them (Moyal for IR2n). Furthermore, if there exists a differentiable *-product corresponding to one of them, each of them is induced by a *-product which is essentially unique.
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Aspirant du Fonds National belge de la Recherche Scientifique.
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Gutt, S. Equivalence of deformations and associated *-products. Lett Math Phys 3, 297–309 (1979). https://doi.org/10.1007/BF01821850
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DOI: https://doi.org/10.1007/BF01821850