Strong coupling analysis of aoki phase in staggered-wilson fermions

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

Research output: Contribution to journalArticle

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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fermions
parity
pions
quantum chromodynamics
condensates
tuning

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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].

Strong coupling analysis of aoki phase in staggered-wilson fermions. / Nakano, Takashi Z.; Misumi, Tatsuhiro; Kimura, Taro; Ohnishi, Akira.

In: Proceedings of Science, Vol. Part F130497, 174, 2012.

Research output: Contribution to journalArticle

Nakano, TZ, Misumi, T, Kimura, T & Ohnishi, A 2012, 'Strong coupling analysis of aoki phase in staggered-wilson fermions', Proceedings of Science, vol. Part F130497, 174.
Nakano, Takashi Z. ; Misumi, Tatsuhiro ; Kimura, Taro ; Ohnishi, Akira. / Strong coupling analysis of aoki phase in staggered-wilson fermions. In: Proceedings of Science. 2012 ; Vol. Part F130497.
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