Strong-coupling analysis of parity phase structure in staggered-Wilson fermions

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

研究成果: Article査読

6 被引用数 (Scopus)

抄録

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

本文言語English
論文番号034501
ジャーナルPhysical Review D - Particles, Fields, Gravitation and Cosmology
86
3
DOI
出版ステータスPublished - 2012 8 8
外部発表はい

ASJC Scopus subject areas

  • 核物理学および高エネルギー物理学
  • 物理学および天文学(その他)

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