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ISSN 2071-0194   Ukr. J. Phys. 2015, Vol. 60, N 6, p.497-502
doi:10.15407/ujpe60.06.0497   Paper

McKeon D.G.C.1,2

1 Department of Applied Mathematics, University of Western Ontario (London Canada N6A 5B7)
2 Department of Mathematics and Computer Science, Algoma University
(Sault St. Marie Canada P6A 2G4, Canada; e-mail: dgmckeo2@uwo.ca)

Determining the Running Coupling from the Effective Action

Section: Fields and elementary particles
Language: English

Abstract: The conformal anomaly has provided an expression for the effective action of gauge theories in the presence of a strong background field in terms of the running coupling constant. We exploit this result to find a novel expansion for the running coupling constant and to compare it with conventional expansions obtained by directly integrating the differential equation for the running coupling constant.

Key words: running coupling, gauge theory.