Domain-Wall Fermions at Strong Coupling

Details Domain-Wall Fermions at Strong Coupling Domain-Wall Fermions at Strong Coupling

2004-09-23

arxiv.org/abs/hep-lat/0409143v1

Nucl.Phys.Proc.Suppl.140:695-697,2005

Physics

High Energy Physics

High Energy Physics - Lattice

4 pages, 4 figures, Lattice2004(chiral)

Scientific paper

10.1016/j.nuclphysbps.2004.11.31

The DWF formulation becomes increasingly problematic at gauge couplings for which $a^{-1}<2$ GeV, where the roughness of the gauge field leads to increased explicit chiral symmetry breaking ($\mres$). This problem becomes especially severe for sufficiently strong coupling where the underlying 4-dimensional Wilson theory is in the Aoki phase. We review our attempts to find a suitable modification of the gauge and/or the fermion action which would allow the DWF method to work reliably at stronger coupling.

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