  Non-perturbative properties of QCD, such as color confinement, are encoded in
the infrared behavior of correlation functions, e.g. propagators and vertices.
Various analytic predictions have been suggested for these quantities in
various gauges. Here we numerically test these predictions using lattice gauge
theory. In particular, we present results for the 2- and 3-point functions for
SU(2) Landau-gauge Yang-Mills theory in three and in four dimensions. Special
attention is paid to systematic finite-volume effects. The gluon and ghost
propagators are also evaluated in the so-called interpolating gauge (between
the Landau and the Coulomb gauge), in order to study their gauge-dependence.
Finally, we consider these propagators in Landau gauge at finite temperature,
with the aim of understanding the effect of the deconfinement phase transition
on their infrared behavior. All our results are compatible with the so-called
Gribov-Zwanziger confinement scenario.
