Harmonic scale transformation in effective QFTs with underlying structures

Details Harmonic scale transformation in effective QFTs with underlying structures Harmonic scale transformation in effective QFTs with underlying structures

1999-08-17

arxiv.org/abs/hep-th/9908111v6

Physics

High Energy Physics

High Energy Physics - Theory

11 pages, RevTex, no figure

Scientific paper

New equations governing the scale transformation behaviors of a QFT with underlying structures are derived. These equations, with their several equivalent versions, can yield some new and significant insights and results that are difficult to see in the conventional renormalization programs. Among the several equivalent versions, one is similar to the usual Callan-Symanzik equation and renormalization group equation but with different meanings. From another version, the anomalous equation of energy-momentum tensor trace can be easily obtained. It can be shown that with the new versions one could partially fix the scheme dependence and hence some renormalization schemes like momentum space subtractions are questionable. The asymptotic freedom for QCD is easily reproduced at one-loop level in our new version CSE. Finally the decoupling theorem a la Appelquist and Carazzone are discussed within our strategy.

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