TY - JOUR
T1 - Critical endpoint in the Polyakov-loop extended NJL model
AU - Kashiwa, Kouji
AU - Kouno, Hiroaki
AU - Matsuzaki, Masayuki
AU - Yahiro, Masanobu
PY - 2008/4/10
Y1 - 2008/4/10
N2 - The critical endpoint (CEP) and the phase structure are studied in the Polyakov-loop extended Nambu-Jona-Lasinio model in which the scalar type eight-quark (σ4) interaction and the vector type four-quark interaction are newly added. The σ4 interaction largely shifts the CEP toward higher temperature and lower chemical potential, while the vector type interaction does oppositely. At zero chemical potential, the σ4 interaction moves the pseudo-critical temperature of the chiral phase transition to the vicinity of that of the deconfinement phase transition.
AB - The critical endpoint (CEP) and the phase structure are studied in the Polyakov-loop extended Nambu-Jona-Lasinio model in which the scalar type eight-quark (σ4) interaction and the vector type four-quark interaction are newly added. The σ4 interaction largely shifts the CEP toward higher temperature and lower chemical potential, while the vector type interaction does oppositely. At zero chemical potential, the σ4 interaction moves the pseudo-critical temperature of the chiral phase transition to the vicinity of that of the deconfinement phase transition.
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U2 - 10.1016/j.physletb.2008.01.075
DO - 10.1016/j.physletb.2008.01.075
M3 - Article
AN - SCOPUS:40949132858
SN - 0370-2693
VL - 662
SP - 26
EP - 32
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 - 1
ER -