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Zbl 1039.53104
Hirshfeld, Allen C.
Deformation quantization in quantum mechanics and quantum field theory. (English)
[A] Mladenov, Iva\"ilo M. (ed.) et al., Proceedings of the 4th international conference on geometry, integrability and quantization, Sts. Constantine and Elena, Bulgaria, June 6--15, 2002. Sofia: Coral Press Scientific Publishing. 11-41 (2003). ISBN 954-90618-4-1/pbk

The concept of deformation quantization and its role in quantum physics is reviewed. The deformation approach is compared with the Hilbert space and Feynman's path integral approaches to quantum mechanics and illustrated for the case of a simple harmonic oscillator, for an oscillator coupled to an external source, and for a quantum field theory of scalar bosons. A remarkable formula of {\it A. S. Cattaneo} and {\it G. Felder} [Commun. Math. Phys. 212, 591--611 (2000; Zbl 1038.53088)] which relates Kontsevich's star product to the expectation value of a product of functions on a Poisson space is also indicated.
[Janusz Grabowski (Warszawa)]

MSC 2000:: *53D55 Deformation quantization, star products
81T70 Quantization in field theory; cohomological methods

Keywords: formal deformations; star product; Wick product; Poisson-sigma model

Citations: Zbl 1038.53088

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