Abstract
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.
| Original language | English |
|---|---|
| Article number | 034501 |
| Journal | Physical Review D - Particles, Fields, Gravitation and Cosmology |
| Volume | 86 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - 2012 Aug 8 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Nuclear and High Energy Physics
Cite this
Strong-coupling analysis of parity phase structure in staggered-Wilson fermions. / Misumi, Tatsuhiro; Nakano, Takashi Z.; Kimura, Taro; Ohnishi, Akira.
In: Physical Review D - Particles, Fields, Gravitation and Cosmology, Vol. 86, No. 3, 034501, 08.08.2012.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Strong-coupling analysis of parity phase structure in staggered-Wilson fermions
AU - Misumi, Tatsuhiro
AU - Nakano, Takashi Z.
AU - Kimura, Taro
AU - Ohnishi, Akira
PY - 2012/8/8
Y1 - 2012/8/8
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=84864870478&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84864870478&partnerID=8YFLogxK
U2 - 10.1103/PhysRevD.86.034501
DO - 10.1103/PhysRevD.86.034501
M3 - Article
VL - 86
JO - Physical review D: Particles and fields
JF - Physical review D: Particles and fields
SN - 1550-7998
IS - 3
M1 - 034501
ER -