  Configurations of pure SU(2) gauge field theory on the lattice are
transformed to Landau gauge. After Fourier transformation, large momentum
amplitudes are suppressed (filtered) by a variable amount, and the
configurations are transformed back to x-space. Spectacular peaks in electric
and magnetic field strengths are found, which share many properties with either
almost pointlike instantons in regular gauge or with extended anti-instantons
in singular gauge. The environment around those peaks are visualized with
respect to the action, to the topological charge density, to the gauge fields
and to electric and magnetic field strengths. The density of the peaks is of
order 1 / fm**4, and it scales according to the string tension under a
variation of the coupling constant. The evolution of the peaks under the amount
of Fourier filtering is visualy compared to the evolution under cooling, and
the gauge dependence of the peaks is discussed. Advantages and shortcomings of
this method are discussed, with emphasis on possible strong distortions of the
action and topological charge density, which become gauge dependent. Finally, I
compare the character of the SU(2)-configurations to those of noncompact
abelian theory.

High Energy Physics - Lattice