1110.1231 (Tatsuhiro Misumi et al.)

Aoki Phases in Staggered-Wilson Fermions    [PDF]

Tatsuhiro Misumi, Michael Creutz, Taro Kimura, Takashi Z. Nakano, Akira Ohnishi

We investigate the parity-broken phase (Aoki phase) for staggered-Wilson
fermions by using the Gross-Neveu model and the strong-coupling lattice QCD. In
the both cases the gap equations indicate the parity-broken phase exists and
the pion becomes massless on the phase boundaries. We also show we can take the
chiral and continuum limit in the Gross-Neveu model by tuning mass and
gauge-coupling parameters. This supports the idea that the staggered-Wilson
fermions can be applied to the lattice QCD simulation by taking a chiral limit,
as with Wilson fermions.

View original: http://arxiv.org/abs/1110.1231