Domain wall fermions with exact chiral symmetry - art. no. 094505

We show how the standard domain wall action can be simply modified to allow arbitrarily exact chiral symmetry at a finite fifth dimensional extent. We note that the method can be used for both quenched and dynamical calculati ons. We test the method using smooth and thermalized gauge field configurat ions. We also make comparisons of the performance (cost) of the domain wall operator for spectroscopy compared to other methods such as the overlap-Di rac operator and find both methods are comparable in cost.