  This study is part of a research program aimed to investigate the relations
between instantons, monopoles, and chiral symmetry breaking. Monopoles are
important 3-dimensional topological configurations existing in QCD, which are
believed to produce colour confinement. Instantons are 4-dimensional
topological configurations and are known to be related to chiral symmetry
breaking. To study the relation between monopoles and instantons we generate
configurations adding to the vacuum state static monopole-antimonopole pairs of
opposite charges by use of a monopole creation operator. We observe that the
monopole creation operator only adds long monopole loops to the configurations.
We then count the number of fermion zero modes using Overlap fermions as a
tool. As a result we find that each monopole-antimonopole pair of magnetic
charge one adds one zero mode of chirality $\pm1$, i.e. one instanton of
topological charge $\pm1$.
