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Reducing Residual-Mass Effects for Domain-Wall Fermions

Karl Jansen·Kei-ichi Nagai
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Abstract

It has been suggested to project out a number of low-lying eigenvalues of the four-dimensional Wilson--Dirac operator that generates the transfer matrix of domain-wall fermions in order to improve simulations with domain-wall fermions. We investigate how this projection method reduces the residual chiral symmetry-breaking effects for a finite extent of the extra dimension. We use the standard Wilson as well as the renormalization--group--improved gauge action. In both cases we find a substantially reduced residual mass when the projection method is employed. In addition, the large fluctuations in this quantity disappear.

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Karl Jansen, Kei-ichi Nagai. 2003-10-16. Reducing Residual-Mass Effects for Domain-Wall Fermions. https://doi.org/10.1088/1126-6708%2F2003%2F12%2F038

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