Bulg. J. Phys. vol.36 no.3 (2009), pp. 199-213



Talk on Anomalies in Quantum Field Theory and Cohomologies of Configuration Spaces

N.M. Nikolov
Institute for Nuclear Research and Nuclear Energy, Tsarigradsko Chaussee 72, BG-1784 Sofia, Bulgaria
Abstract. In this work the deviation from commutativity of the renormalization and the action of all linear partial differential operators is investigated. This deviation is the source of the anomalies in quantum field theory, including the renormalization group action, and it is characterized by certain renormalization cocycles. Cohomological differential equations are obtained over the so called (ordered) configuration spaces, which determine the renormalization cocycles up to the renormalization freedom.

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