Exact chiral symmetry, non-Hermiticity, and the axial anomaly on the lattice: A symmetry-class criterion for disorder-induced undoubling

Laurence A. Jacobs

A lattice Dirac operator designed to preserve exact chiral symmetry by weighting the derivative with a quenched random field---the \emph{chiral disordered fermions} (\CDF) of [L.\…