Fermion decoupling and the Axial Anomaly on the Lattice

Abstract

In the axial Ward identity of lattice QED we show that in the limit of infinite fermion mass m the pseudoscalar density term exactly cancels the Adler-Bell-Jackiw anomaly. Using this result we calculate the U(1) axial anomaly in a non-abelian gauge theory.

Comments: poster at LATTICE99 (theoretical developments), 3 pages, 1 ps figure