Running Coupling in Non-Perturbative QCD - I. Bare Vertices and y-max Approximation

Details Running Coupling in Non-Perturbative QCD - I. Bare Vertices and y-max Approximation Running Coupling in Non-Perturbative QCD - I. Bare Vertices and y-max Approximation

1997-12-19

arxiv.org/abs/hep-ph/9712459v3

Phys.Rev.D58:094036,1998

Physics

High Energy Physics

High Energy Physics - Phenomenology

Latex, 41 pages, 7 figures, submitted to Phys. Rev. D; corrected typos

Scientific paper

10.1103/PhysRevD.58.094036

A recent claim that in quantum chromodynamics the gluon propagator vanishes in the infrared limit, while the ghost propagator is more singular than a simple pole, is investigated analytically and numerically. This picture is shown to be supported even at the level in which the vertices in the Dyson-Schwinger equations are taken to be bare. The running coupling is shown to be uniquely determined by the equations and to have a large finite infrared limit.

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