Chiral symmetry restoration in the Schwinger model with domain wall fermions

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Abstract
Domain wall fermions utilize an extra spacetime dimension to provide a method for restoring the regularization-induced chiral symmetry breaking in lattice vector gauge theories even at finite lattice spacing. The breaking is restored at an exponential rate as the size of the extra dimension increases. Before this method can be used in dynamical simulations of lattice QCD, the dependence of the restoration rate on the other parameters of the theory and, in particular, the lattice spacing must be investigated. In this paper such an investigation is carried out in the context of the two flavor lattice Schwinger model.