Magnetic mass of the gluon in the presence of quarks
Kalashnikov O. K.
The exact spinor structure of the Green's function of quarks in QCD4 is found for Τ Φ 0. A nonperturbative expression is found for the quark-gluon vertex in the limit of a zero gluon momentum. The presence of quarks does not alter the infrared limit of the gluon propagator in QCD4. This limit is the same as that given by the standard expression in quarkless gluodynamics.