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Covariant Model for Dynamical Quark Confinement

Helmut Haberzettl
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Abstract

Based on a recent manifestly covariant time-ordered approach to the relativistic many-body problem, the quark propagator is defined by a nonlinear Dyson--Schwinger-type integral equation, with a one-gluon loop. The resulting energy-dependent quark mass is such that the propagator is singularity-free for real energies, thus ensuring confinement. The self-energy integral converges without regularization, due to the chiral limit of the quark mass itself. Moreover, the integral determines the low-energy limit of the quark-gluon coupling constant, for which a value of $g^2/4π=4.712$ is found.

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Helmut Haberzettl. 1994-03-05. Covariant Model for Dynamical Quark Confinement. https://doi.org/10.1016/0375-9474(94)00467-2

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