Infrared singularities of the gluon propagator and quark confinement in the limit of an infinite number of colors
Teoretičeskaâ i matematičeskaâ fizika, Tome 54 (1983) no. 1, pp. 52-56
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An exact solution is obtained for the quark propagator in chromodynamics with neglect of the gluon-gluon interaction in the limit $N\to\infty$ for different asymptotic behaviors of the gluon propagator as $k\to 0$. It is shown that a singularity of the type $k^{-2n}$, $n\leqslant 2$, leads to quark confinement.
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