Renormalization group and infrared behavior of quantum chromodynamics
- 15 March 1979
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review D
- Vol. 19 (6) , 1762-1781
- https://doi.org/10.1103/physrevd.19.1762
Abstract
A diagrammatic implementation of the generalized renormalization group is developed and used to study the infrared divergences of the photon-quark-quark amplitude in quantum chromodynamics. The leading-log result is simply obtained. We show that nonleading terms cause no qualitative change and that the leading-log result is accurate down to the nonperturbative region. The infrared behavior of QED is discussed as a pedagogical example.Keywords
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