Connection between momentum cutoff and operator cutoff regularizations
- Department of Physics, Duke University, Durham, North Carolina 27708 (United States)
Operator cutoff regularization based on the original Schwinger proper-time formalism is examined. By constructing a regulating smearing function for the proper-time integration, we show how this regularization scheme simulates the usual momentum cutoff prescription yet preserves gauge symmetry even in the presence of the cutoff scales. The similarity between the operator cutoff regularization and the method of higher (covariant) derivatives is also observed. The invariant nature of the operator cutoff regularization makes it a promising tool for exploring the renormalization group flow of gauge theories in the spirit of the Wilson-Kadanoff blocking transformation. {copyright} {ital 1996 The American Physical Society.}
- DOE Contract Number:
- FG05-90ER40592
- OSTI ID:
- 278872
- Journal Information:
- Physical Review, D, Journal Name: Physical Review, D Journal Issue: 4 Vol. 53; ISSN PRVDAQ; ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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