TY - JOUR
T1 - Effective model approach to meson screening masses at finite temperature
AU - Ishii, Masahiro
AU - Sasaki, Takahiro
AU - Kashiwa, Kouji
AU - Kouno, Hiroaki
AU - Yahiro, Masanobu
N1 - Copyright:
Copyright 2014 Elsevier B.V., All rights reserved.
PY - 2014/4/7
Y1 - 2014/4/7
N2 - Temperature dependence of pion and sigma-meson screening masses is evaluated by the Polyakov-loop extended Nambu-Jona-Lasinio (PNJL) model with the entanglement vertex. We propose a practical way of calculating meson screening masses in the NJL-type effective models. The method based on the Pauli-Villars regularization solves the well-known difficulty that the evaluation of screening masses is not easy in the NJL-type effective models. The PNJL model with the entanglement vertex and the Pauli-Villars regularization well reproduces lattice QCD results on temperature dependence of the chiral condensate and the Polyakov loop. The method is applied to analyze temperature dependence of pion screening masses calculated with state-of-the-art lattice simulations with success in reproducing the lattice QCD results.
AB - Temperature dependence of pion and sigma-meson screening masses is evaluated by the Polyakov-loop extended Nambu-Jona-Lasinio (PNJL) model with the entanglement vertex. We propose a practical way of calculating meson screening masses in the NJL-type effective models. The method based on the Pauli-Villars regularization solves the well-known difficulty that the evaluation of screening masses is not easy in the NJL-type effective models. The PNJL model with the entanglement vertex and the Pauli-Villars regularization well reproduces lattice QCD results on temperature dependence of the chiral condensate and the Polyakov loop. The method is applied to analyze temperature dependence of pion screening masses calculated with state-of-the-art lattice simulations with success in reproducing the lattice QCD results.
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U2 - 10.1103/PhysRevD.89.071901
DO - 10.1103/PhysRevD.89.071901
M3 - Article
AN - SCOPUS:84898669621
VL - 89
JO - Physical Review D - Particles, Fields, Gravitation and Cosmology
JF - Physical Review D - Particles, Fields, Gravitation and Cosmology
SN - 1550-7998
IS - 7
M1 - 071901
ER -