Closedness of star products and cohomologies

Details Closedness of star products and cohomologies Closedness of star products and cohomologies

1994-09-10

arxiv.org/abs/hep-th/9409053v1

Physics

High Energy Physics

High Energy Physics - Theory

16 pages

Scientific paper

We first review the introduction of star products in connection with deformations of Poisson brackets and the various cohomologies that are related to them. Then we concentrate on what we have called ``closed star products" and their relations with cyclic cohomology and index theorems. Finally we shall explain how quantum groups, especially in their recent topological form, are in essence examples of star products.

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