Strong coupling analysis of aoki phase in staggered-wilson fermions

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

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Abstract

We study strong-coupling lattice QCD with staggered-Wilson fermions, with an emphasis on the possibility of spontaneous parity breaking. We perform effective potential analysis in the strong-coupling limit. From gap equations we find the pion condensate becomes nonzero in some range of a mass parameter, which indicates the existence of the parity-broken phase. We also find massless pions and PCAC relations around the second-order phase boundary. These results suggest that we can take the chiral limit by tuning a mass parameter in lattice QCD with staggered-Wilson fermions as with the Wilson fermion.

Original languageEnglish
Article number174
JournalProceedings of Science
VolumePart F130497
Publication statusPublished - 2012
Externally publishedYes

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    Nakano, T. Z., Misumi, T., Kimura, T., & Ohnishi, A. (2012). Strong coupling analysis of aoki phase in staggered-wilson fermions. Proceedings of Science, Part F130497, [174].