Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2011-11-28
Physics
High Energy Physics
High Energy Physics - Theory
References added. RevTeX, 15 pages. Contributed to Quantum Theory and Symmetries 7, August 7-13, 2011, Prague
Scientific paper
We show that in the background field method (BFM) quantization of Yang-Mills theory the dependence of the vertex functional on the background field is controlled by a canonical transformation w.r.t. the Batalin-Vilkovisky bracket, naturally associated with the BRST symmetry of the theory. Since it only relies on the Slavnov-Taylor identity of the model, this result holds both in perturbation theory and in the non-perturbative regime. It provides a general consistent framework for the systematic implementation of the BFM in non-perturbative approaches to QCD, like e.g. those based on the Schwinger-Dyson equations or the lattice, in the presence of topologically non-trivial background configurations. The analysis is carried out in an arbitrary (background) R_\xi-gauge.
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