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Effective Beta-Functions for Effective Field Theory

Martin B. Einhorn·Jose Wudka
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Abstract

We consider the problem of determining the beta-functions for any reduced effective field theory. Even though not all the Green's functions of a reduced effective field theory are renormalizable, unlike the full effective field theory, certain effective beta- functions for the reduced set of couplings may be calculated without having to introduce vertices in the Feynman rules for redundant operators. These effective beta-functions suffice to apply the renormalization group equation to any transition amplitude (i.e., S- matrix element), thereby rendering reduced effective field theories no more cumbersome than traditionally renormalizable field theories. These effective beta-functions may equally be regarded as the running of couplings for a particular redefinition of the fields.

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Martin B. Einhorn, Jose Wudka. 2001-06-23. Effective Beta-Functions for Effective Field Theory. https://doi.org/10.1088/1126-6708%2F2001%2F08%2F025

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