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VOLUME 51 (1990) | ISSUE 12 | PAGE 601
Nonequivalence of perturbative infrared properties of gluon propagator in various gauges
At nonzero temperatures the perturbative infrared limit of the two-loop gluon polarization tensor behaves in qualitatively different ways in covariant a gauges (the false infrared pole in the gluon propagator is not eliminated) and in the gauge A4 = 0, in which the magnetic mass m2M φ 0 arises.