Effective Beta-Functions for Effective Field Theory

Details Effective Beta-Functions for Effective Field Theory Effective Beta-Functions for Effective Field Theory

2001-05-03

arxiv.org/abs/hep-ph/0105035v3

JHEP 0108:025,2001

Physics

High Energy Physics

High Energy Physics - Phenomenology

13 pages, LaTeX (requires JHEP class). Version 3: additional references and a slight expansion of Sections 3 and 5. No substan

Scientific paper

10.1088/1126-6708/2001/08/025

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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