Calculation of the Lepage-Mackenzie scale for the lattice axial-vector and vector currents
Journal Article
·
· Physical Review, D
- Department of Physics, Washington University, St. Louis, Missouri 63130 (United States)
- Department of Physics, University of Utah, Salt Lake City, Utah 84112 (United States)
We calculate the perturbative scales (q{sup {star}}) for the axial-vector and vector currents for the Wilson action, with and without tadpole improvement, using the formalism of Lepage and Mackenzie. The scale for the pseudoscalar density (times the mass) is computed as well. Contrary to naive expectation, tadpole improvement reduces q{sup {star}} by only a small amount for the operators we consider. We also discuss the use of a nonperturbative coupling to calculate the perturbative scale. {copyright} {ital 1999} {ital The American Physical Society}
- OSTI ID:
- 322039
- Journal Information:
- Physical Review, D, Vol. 59, Issue 7; Other Information: PBD: Apr 1999
- Country of Publication:
- United States
- Language:
- English
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