Long-Distance Behavior of the Invariant Charge in Non-Abelian Gauge Theories
- 21 June 1976
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 36 (25) , 1511-1514
- https://doi.org/10.1103/physrevlett.36.1511
Abstract
The long-distance behavior of the invariant charge is investigated. For massive quarks, the gluon-quark-antiquark charge is equal to the massless Yang-Mills charge. This result reflects the fact that the infrared limit is reached only as the gluon and quarks approach their mass shell at the same rate. A nonperturbative scheme in terms of the invariant charge, that could explicitly display the infrared structure of non-Abelian theories, is proposed.Keywords
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