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Gluon condensates and the non-perturbative behaviour of the glion propagator

1989; Elsevier BV; Volume: 220; Issue: 3 Linguagem: Inglês

10.1016/0370-2693(89)90902-7

1873-2445

E. Bagán, M. R. Pennington,

High-Energy Particle Collisions Research

Solutions of the truncated Schwinger-Dyson equations determine the behaviour of the gluon propagator in the non-perturbative regime. This behaviour is interpreted in terms of non-zero vacuum expectation values for gluon operators (condensates). These are shown to have not only the expected behaviour with Λ, but to have values consistent with those determined from experiment using QCD sum rules.