The Running Gauge Coupling in the Exact Renormalization Group Approach

Details The Running Gauge Coupling in the Exact Renormalization Group Approach The Running Gauge Coupling in the Exact Renormalization Group Approach

1997-02-12

arxiv.org/abs/hep-ph/9702309v1

Z.Phys. C76 (1997) 721-727

Physics

High Energy Physics

High Energy Physics - Phenomenology

17 pages (latex2e), 6 figs

Scientific paper

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.

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