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

被引：7

作者：

Misumi, Tatsuhiro ^{[1
]}

Nakano, Takashi Z. ^{[2
]}

Kimura, Taro ^{[3
]}

Ohnishi, Akira

机构：

[1] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA

[2] Kyoto Univ, Yukawa Inst Theoret Phys, Dept Phys, Kyoto 6068502, Japan

[3] RIKEN, Nishina Ctr, Phys Math Lab, Wako, Saitama 3510198, Japan

来源：

PHYSICAL REVIEW D | 2012年 / 86卷 / 03期

关键词：

DYNAMICAL SYMMETRY-BREAKING; U(1) PROBLEM; CHIRAL SYMMETRY; LATTICE QCD; NEUTRINOS; ABSENCE;

D O I：

10.1103/PhysRevD.86.034501

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

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.

引用

页数：17

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