TY - JOUR
T1 - Phase structure for lattice fermions with flavored chemical potential terms
AU - Misumi, Tatsuhiro
PY - 2012
Y1 - 2012
N2 - We discuss the chiral phase diagram in the parameter space of lattice QCD with minimal-doubling fermions, which can be seen as lattice fermions with flavored chemical potential terms. We study strong-coupling lattice QCD with the Karsten-Wilczek formulation, which has one relevant parameter μ 3 as well as gauge coupling and a mass parameter. We find a nontrivial chiral phase structure with a second-order phase transition between chiral symmetric and broken phases. To capture the whole structure of the phase diagram, we study the related lattice Gross-Neveu model. The result indicates that the chiral phase transition also exists in the weak-coupling region. From these results we speculate on the μ 3-g2 chiral phase diagram in lattice QCD with minimal-doubling fermions, and discuss their application to numerical simulations.
AB - We discuss the chiral phase diagram in the parameter space of lattice QCD with minimal-doubling fermions, which can be seen as lattice fermions with flavored chemical potential terms. We study strong-coupling lattice QCD with the Karsten-Wilczek formulation, which has one relevant parameter μ 3 as well as gauge coupling and a mass parameter. We find a nontrivial chiral phase structure with a second-order phase transition between chiral symmetric and broken phases. To capture the whole structure of the phase diagram, we study the related lattice Gross-Neveu model. The result indicates that the chiral phase transition also exists in the weak-coupling region. From these results we speculate on the μ 3-g2 chiral phase diagram in lattice QCD with minimal-doubling fermions, and discuss their application to numerical simulations.
KW - Lattice Gauge Field Theories
KW - Lattice QCD
KW - Strong Coupling Expansion
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U2 - 10.1007/JHEP08(2012)068
DO - 10.1007/JHEP08(2012)068
M3 - Article
AN - SCOPUS:84865213836
VL - 2012
JO - Journal of High Energy Physics
JF - Journal of High Energy Physics
SN - 1126-6708
IS - 8
M1 - 68
ER -