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The infrared behavior of the gluon propagator is directly related toconfinement in QCD. Indeed, the Gribov-Zwanziger scenario of confinementpredicts an infrared vanishing (transverse) gluon propagator in Landau-likegauges, implying violation of reflection positivity and gluon confinement.Finite-volume effects make it very difficult to observe (in the minimal Landaugauge) an infrared suppressed gluon propagator in lattice simulations of thefour-dimensional case. Here we report results for the SU(2) gluon propagator ina gauge that interpolates between the minimal Landau gauge (for gauge parameterlambda equal to 1) and the minimal Coulomb gauge (corresponding to lambda = 0).For small values of lambda we find that the spatially-transverse gluonpropagator D^tr(0,|\vec p|), considered as a function of the spatial momenta|\vec p|, is clearly infrared suppressed. This result is in agreement with theGribov-Zwanziger scenario and with previous numerical results in the minimalCoulomb gauge. We also discuss the nature of the limit lambda -> 0 (completeCoulomb gauge) and its relation to the standard Coulomb gauge (lambda = 0). Ourfindings are corroborated by similar results in the three-dimensional case,where the infrared suppression is observed for all considered values of lambda.Comment: 5 pages, 2 figures, one figure with additional results and extended  discussion of some aspects of the results added and some minor  clarifications. In v3: Various small changes and addition

INFRARED-SUPPRESSED GLUON PROPAGATOR IN 4D YANG–MILLS THEORY IN A LANDAU-LIKE GAUGE