Chiral condensate, quark charge and chiral density

We study the topological and fermionic vacuum structure of four-dimensional QCD on the lattice by means of correlators of fermionic observables and to pological densities. We show the existence of strong local correlations bet ween the topological charge density and the quark condensate, charge and ch iral density. By analysis of individual gauge configurations, we visualize that instantons (antiinstantons) carry positive (negative) chirality, where as the quark charge density fluctuates in sign within instantons.