Definition of Topological Susceptibility Via Lattice Anomalous Ward Identities and Its Perturbative Tail

摘要

The lattice definition of topological charge density suggested by the U(1)A anomalous Ward identity is considered. It is proved that the associated topological susceptibility has no perturbative tail in the chiral limit (zero renormalized quark mass) by studying the infrared properties of perturbative lattice QCD.