Batalin-Vilkovisky formalism in perturbative algebraic quantum field theory

Details Batalin-Vilkovisky formalism in perturbative algebraic quantum field theory Batalin-Vilkovisky formalism in perturbative algebraic quantum field theory

2011-10-24

arxiv.org/abs/1110.5232v1

Physics

Mathematical Physics

30 pages

Scientific paper

On the basis of a thorough discussion of the Batalin-Vilkovisky formalism for classical field theory presented in our previous publication, we construct in this paper the Batalin-Vilkovisky complex in perturbatively renormalized quantum field theory. The crucial technical ingredient is a proof that the renormalized time-ordered product is equivalent to the pointwise product of classical field theory. The renormalized Batalin-Vilkovisky algebra is then the classical algebra but written in terms of the time-ordered product, together with an operator which replaces the ill defined graded Laplacian of the unrenormalized theory. We identify it with the anomaly term of the anomalous Master Ward Identity of Brennecke and D\"utsch. Contrary to other approaches we do not refer to the path integral formalism and do not need to use regularizations in intermediate steps.

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