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VOLUME 51 (1990) | ISSUE 6 | PAGE 293
Cancellation of infrared divergences in trace of gluon polarization tensor at T\neq 0 in covariant gauges
Perturbative infrared divergences cancel out algebraically in the trace of the transverse components of the two-loop gluon polarization tensor in covariant gauges at Τ Φ 0. The limit Пй (k4 = 0, | к [ -> 0) of this tensor is zero, regardless of the choice of gauge parameter.