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
N1 - Copyright:
Copyright 2012 Elsevier B.V., All rights reserved.
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.
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U2 - 10.1103/PhysRevD.86.034501
DO - 10.1103/PhysRevD.86.034501
M3 - Article
AN - SCOPUS:84864870478
VL - 86
JO - Physical Review D - Particles, Fields, Gravitation and Cosmology
JF - Physical Review D - Particles, Fields, Gravitation and Cosmology
SN - 1550-7998
IS - 3
M1 - 034501
ER -