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- Title
SPACE-TIME PROPAGATION OF CONFINED GLUONS.
- Authors
CELENZA, L. S.; SHAKIN, C. M.; WANG, HUI-WEN; YANG, XIN-HUA
- Abstract
We assume that there is gluon condensate in the zero-momentum mode in the QCD ground state. A lowest-order calculation in terms of a condensate order parameter leads to a dynamical mass for gluons via the Schwinger mechanism and a gluon propagator with no on-mass-shell singularities - that is, the gluon is a "nonpropagating mode" in the gluon condensate. We transform our momentum-space propagator into coordinate space and find that the propagator has essentially the same delta-function light-cone singularities as the free propagator. However, in contrast to a theory without confinement, we show that the propagator exhibits exponential decay, both for time-like and space-like propagation. In this manner, we obtain a space-time characterization of the confinement phenomenon in terms of an order parameter of the condensate.
- Publication
International Journal of Modern Physics A: Particles & Fields; Gravitation; Cosmology; Nuclear Physics, 1989, Vol 4, Issue 15, p3807
- ISSN
0217-751X
- Publication type
Article
- DOI
10.1142/S0217751X89001539