Lattice chiral fermions in the background of non-trivial topology

Abstract

We address the problem of numerical simulations in the background non-trivial topology in the chiral Schwinger model. An effective fermionic action is derived which is in accord with established analytical results, and which satisfies the anomaly equation. We describe a numerical evaluation of baryon number violating amplitudes, specifically the 't Hooft vertex.

Comments: LATTICE99(Chiral Gauge Theories)