TY - JOUR
T1 - Chiral phase transition in an extended NJL model with higher-order multi-quark interactions
AU - Kashiwa, Kouji
AU - Kouno, Hiroaki
AU - Sakaguchi, Tomohiko
AU - Matsuzaki, Masayuki
AU - Yahiro, Masanobu
PY - 2007/4/19
Y1 - 2007/4/19
N2 - The chiral phase transition is studied in an extended Nambu-Jona-Lasinio model with eight-quark interactions. Equations for scalar and vector quark densities, derived in the mean field approximation, are nonlinear and mutually coupled. The scalar type nonlinear term hastens the restoration of chiral symmetry, while the scalar-vector mixing term makes the transition sharper. The scalar type nonlinear term shifts the critical endpoint toward the values predicted by lattice QCD simulations and the QCD-like theory.
AB - The chiral phase transition is studied in an extended Nambu-Jona-Lasinio model with eight-quark interactions. Equations for scalar and vector quark densities, derived in the mean field approximation, are nonlinear and mutually coupled. The scalar type nonlinear term hastens the restoration of chiral symmetry, while the scalar-vector mixing term makes the transition sharper. The scalar type nonlinear term shifts the critical endpoint toward the values predicted by lattice QCD simulations and the QCD-like theory.
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U2 - 10.1016/j.physletb.2007.01.061
DO - 10.1016/j.physletb.2007.01.061
M3 - Article
AN - SCOPUS:33947644836
SN - 0370-2693
VL - 647
SP - 446
EP - 451
JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
IS - 5-6
ER -