Infrared behavior of zero-mass Green's functions and the absence of quark confinement in perturbation theory
- 15 July 1976
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review D
- Vol. 14 (2) , 578-582
- https://doi.org/10.1103/physrevd.14.578
Abstract
We present a simple proof that all Green's functions for nonexceptional Euclidean momenta in any renormalizable (but not superrenormalizable) field theory containing zero-mass particles are infrared finite. We discuss the relationship of a corollary result, that any physical discontinuity of Green's functions is also infrared finite, to the question of quark confinement in non-Abelian gauge theories.Keywords
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