Reducing Residual-Mass Effects for Domain-Wall Fermions

Details Reducing Residual-Mass Effects for Domain-Wall Fermions Reducing Residual-Mass Effects for Domain-Wall Fermions

2003-05-10

arxiv.org/abs/hep-lat/0305009v2

JHEP 0312 (2003) 038

Physics

High Energy Physics

High Energy Physics - Lattice

18 pages, 10 figures, references updated, comments added

Scientific paper

10.1088/1126-6708/2003/12/038

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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