Perturbative renormalization and infrared finiteness in the Wilson renormalization group : the massless scalar case ∗

Abstract

A new proof of perturbative renormalizability and infrared finiteness for a scalar massless theory is obtained from a formulation of renormalized field theory based on the Wilson renormalization group. The loop expansion of the renor-malized Green functions is deduced from the Polchinski equation of renormal-ization group. The resulting Feynman graphs are… (More)

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