Geometric Measurement of Topological Susceptibility on Large Lattices

Abstract

The topological susceptibility of the quenched QCD vacuum is measured on large lattices for three $β$ values from $6.0$ to $6.4$. Charges possibly induced by $O(a)$ dislocations are identified and shown to have little effect on the measured susceptibility. As $β$ increases, fewer such questionable charges are found. Scaling is checked by examining the ratios of the susceptibility to previously existing values of the rho mass, string tension, F-pi, and lambda-lattice.