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arxiv: 1110.1231 · v2 · pith:Q4ZKHR35new · submitted 2011-10-06 · ✦ hep-lat

Aoki Phases in Staggered-Wilson Fermions

Tatsuhiro Misumi , Michael Creutz , Taro Kimura , Takashi Z. Nakano , Akira Ohnishi This is my paper
classification ✦ hep-lat
keywords fermionsphasestaggered-wilsonaokichiralgross-neveulatticelimit
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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.

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