Dipartimento di Matematica "Guido Castelnuovo"
Universita' degli Studi di Roma "la Sapienza"
Piazzale Aldo Moro, 2
00185 - Roma, ITALY

Associative algebras, punctured disks and the quantization of Poisson manifolds

The aim of the talk is to provide an introduction to the algebraic, geometric and quantum field theoretic ideas that lie behind the Kontsevich-Cattaneo-Felder formula for the quantization of Poisson structures, and to show how the quantization formula itself naturally arises when one couples the form a Feynman integral should have in order to reproduce the given Poisson structure as the first order term of its perturbative expansion with the form it should have to describe an associative algebra. It is further shown how the Koszul-Magri brackets on 1-forms naturally fits into the theory of the Poisson sigma-model.

This is a joint work with Riccardo Longoni.