  We present a study of gauge invariant density-density correlators.
Density-density correlators probe hadron wave functions and thus can be used to
study hadron deformation. Their zero momentum projection requires the
computation of all-to-all propagators, which are evaluated with the standard
stochastic technique, the dilution method and the stochastic sequential
technique. We compare the results to a previous analysis that did not employ
the zero momentum projection.
