We study topological aspects of the QCD vacuum structure in SU(2) lattice
gauge theory with the abelian gauge fixing. The index of the Dirac operator is
measured by using the Wilson fermion in the quenched approximation. We find
chiral-asymmetric zero modes in background fields dominated by QCD-monopoles
without any cooling.Comment: 3 pages, Latex, 4 figures. Talk presented by S. Sasaki at XV
International Symposium on 'Lattice Field Theory (LATTICE 97)', July 22 - 26,
1997, Edinburgh, U
