  By cooling of equilibrium lattice fields at finite temperature in SU(2) gauge
theory it has been shown that topological objects (calorons) observed on the
lattice in the confined phase possess a dyonic substructure which becomes
visible under certain circumstances. Here we show that, with decreasing
temperature of the equilibrium ensemble, the distribution in the caloron
parameter space is modified such that the calorons appear non-dissociated into
constituent dyons. Still the calorons have nontrivial holonomy which is
demonstrated by the Polyakov line behaviour for these configurations. At
vanishing temperature (on a symmetric lattice) topological lumps obtained by
cooling possess rotational symmetry in 4D and a characteristic double peak
structure of Polyakov lines (defined with respect to temporal and spatial
directions) with non-trivial asymptotics.
