1997/02/12 by Ulrich Ellwanger
Physics and Astronomy · #hep-ph
published as Z.Phys. C76 (1997) 721-727 · 17 pages (latex2e), 6 figs
arxiv created 1997/02/12 · arxiv updated 2009/11/30
We discuss the perturbative running Yang-Mills coupling constant in the Wilsonian exact renormalization group approach, and compare it to the running coupling in the more conventional MS-bar scheme. The exact renormalization group approach corresponds to a particular renormalization scheme, and we relate explicitly the corresponding Lambda-parameters. The unambiguous definition of an exact renormalization group scheme requires, however, the use of a one-loop improved high energy effective action.