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Effective Scalar Field Theory and Reduction of Couplings

Mario Atance, Jose Luis Cortes

hep-pharXiv:hep-ph/9612324

Abstract

A general discussion of the renormalization of the quantum theory of a scalar field as an effective field theory is presented. The renormalization group equations in a mass-independent renormalization scheme allow us to identify the possibility to go beyond the renormalizable ϕ4 theory without losing its predictive power. It is shown that there is a minimal extension with just one additional free parameter (the mass scale of the effective theory expansion) and some of its properties are discussed.

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