We study the qqหโ relativistic interaction starting from the
Feynman-Schwinger representation of the gauge-invariant quark-antiquark Green
function. We focus on the one-body limit and discuss the obtained
non-perturbative interaction kernel of the Dirac equation.Comment: 5 pages, Latex (espcrc2.sty) To be published in the proceedings of
High-Energy Physics International Euroconference on Quantum
Chromodynamics:QCD97; 25th Anniversary of QCD, Montpellier, France, 3-9 July
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