Closedness of star products and cohomologies

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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.
16 pages

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High Energy Physics - Theory, Quantum Algebra

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http://salesiana.dossiersoluciones.com/handle/123456789/152655

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/hep-th/9409053
 http://arxiv.org/abs/hep-th/9409053

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arXiv