Some convolution products in Quantum Field Theory

Details Some convolution products in Quantum Field Theory Some convolution products in Quantum Field Theory

2006-12-05

arxiv.org/abs/math-ph/0612016v1

Physics

Mathematical Physics

18 pages

Scientific paper

This paper aims to show constructions of scale dependence and interaction on some probabilistic models which may be revelant for renormalization theory in Quantum Field Theory. We begin with a review of the convolution product's use in the Kreimer-Connes formalism of perturbative renormalization. We show that the Wilson effective action can be obtained from a convolution product propriety of regularized Gaussian measures on the space of fields. Then, we propose a natural C*-algebraic framework for scale dependent field theories which may enhance the conceptual approach to renormalization theory. In the same spirit, we introduce a probabilistic construction of interacting theories for simple models and apply it for quantum field theory by defining a partition function in this setting.

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