scholarly journals QCD phase diagram at finite baryon and isospin chemical potentials in the Polyakov loop extended quark meson model with vector interaction

2013 ◽  
Vol 88 (7) ◽  
Author(s):  
H. Ueda ◽  
T. Z. Nakano ◽  
A. Ohnishi ◽  
M. Ruggieri ◽  
K. Sumiyoshi
Keyword(s):  
Phase Diagram ◽  
Polyakov Loop ◽  
Qcd Phase Diagram ◽  
Chemical Potentials ◽  
Vector Interaction

Roberge–Weiss phase transition and QCD phase diagram in the (2 + 1) flavor Polyakov quark meson model

2019 ◽  
Vol 34 (02) ◽  
pp. 1950011
Author(s):  
Xiu-Fei Li
Keyword(s):  
Phase Transition ◽  
Phase Diagram ◽  
Chemical Potential ◽  
Polyakov Loop ◽  
Effective Model ◽  
Thermodynamic Quantities ◽  
Qcd Phase Diagram ◽  
Chemical Potentials

The Roberge–Weiss (RW) phase transition of (2 + 1) flavor QCD at imaginary quark chemical potentials [Formula: see text] is investigated by employing the Polyakov loop extended Quark Meson model (PQM), where [Formula: see text] is temperature, and [Formula: see text] is a dimensionless chemical potential. We calculate some thermodynamic quantities and draw the phase diagram. This work can be considered as a supplement of studying the RW transition by using the effective model.

scholarly journals The QCD Phase-Diagram Obtained from the NJL and the Extended-NJL Models for Quark and Hadron Phases

2017 ◽  
Vol 45 ◽  
pp. 1760059
Author(s):  
Clebson A. Graeff ◽  
Débora P. Menezes
Keyword(s):  
Phase Transition ◽  
Phase Diagram ◽  
Equations Of State ◽  
Original Formulation ◽  
Qcd Phase Diagram ◽  
Hadron Phase ◽  
Vector Interaction ◽  
Njl Model ◽  
Quark Phase

We analyse the hadron/quark phase transition described by the Nambu-Jona-Lasinio (NJL) model [quark phase] and the extended Nambu-Jona-Lasinio model (eNJL) [hadron phase]. While the original formulation of the NJL model is not capable of describing hadronic properties due to its lack of confinement, it can be extended with a scalar-vector interaction so it exhibits this property, the so-called eNJL model. As part of this analysis, we obtain the equations of state within the SU(2) versions of both models for the hadron and the quark phases and determine the binodal surface.

QCD Phase Diagram at Finite Baryon and Isospin Chemical Potentials

2011 ◽  
Author(s):  
T. Sasaki ◽  
Y. Sakai ◽  
H. Kouno ◽  
M. Yahiro ◽  
Atsushi Hosaka ◽  
...  
Keyword(s):  
Phase Diagram ◽  
Qcd Phase Diagram ◽  
Chemical Potentials

scholarly journals Role of vector interaction and axial anomaly in the PNJL modeling of the QCD phase diagram

2013 ◽  
Vol 719 (1-3) ◽  
pp. 131-135 ◽  
Author(s):  
Nino Bratovic ◽  
Tetsuo Hatsuda ◽  
Wolfram Weise
Keyword(s):  
Phase Diagram ◽  
Axial Anomaly ◽  
Qcd Phase Diagram ◽  
Vector Interaction

QCD phase diagram in the Polyakov loop SU(2) Nambu—Jona-Lasinio model

2016 ◽  
Vol 186 (4) ◽  
pp. 387-403 ◽  
Author(s):  
Yurii L. Kalinovsky ◽  
V.D. Toneev ◽  
Aleksandra V. Friesen
Keyword(s):  
Phase Diagram ◽  
Polyakov Loop ◽  
Qcd Phase Diagram

QCD phase diagram with the improved Polyakov loop effective potential

2016 ◽  
Vol 27 (6) ◽  
Author(s):  
Guo-Yun Shao ◽  
Xue-Yan Gao ◽  
Zhan-Duo Tang ◽  
Ning Gao
Keyword(s):  
Phase Diagram ◽  
Effective Potential ◽  
Polyakov Loop ◽  
Qcd Phase Diagram

scholarly journals Crossover-model approach to QCD phase diagram, equation of state and susceptibilities in the 2+1 and 2+1+1 flavor systems

2017 ◽  
Vol 32 (36) ◽  
pp. 1750205 ◽  
Author(s):  
Akihisa Miyahara ◽  
Masahiro Ishii ◽  
Hiroaki Kouno ◽  
Masanobu Yahiro
Keyword(s):  
Phase Diagram ◽  
Equation Of State ◽  
Baryon Number ◽  
Entropy Density ◽  
Transition Line ◽  
Qcd Phase Diagram ◽  
Chemical Potentials ◽  
Number Formula ◽  
Crossover Transition ◽  
Production Probability

We construct a simple model for describing the hadron–quark crossover transition by using lattice QCD (LQCD) data in the [Formula: see text] flavor system, and draw the phase diagram in the [Formula: see text] and [Formula: see text] flavor systems through analyses of the equation of state (EoS) and the susceptibilities. In the present hadron–quark crossover (HQC) model, the entropy density [Formula: see text] is defined by [Formula: see text] with the hadron-production probability [Formula: see text], where [Formula: see text] is calculated by the hadron resonance gas model that is valid in low temperature [Formula: see text] and [Formula: see text] is evaluated by the independent quark model that explains LQCD data on the EoS in the region [Formula: see text] for the [Formula: see text] flavor system and [Formula: see text] for the [Formula: see text] flavor system. The [Formula: see text] is determined from LQCD data on [Formula: see text] and susceptibilities for the baryon-number [Formula: see text], the isospin [Formula: see text] and the hypercharge [Formula: see text] in the [Formula: see text] flavor system. The HQC model is successful in reproducing LQCD data on the EoS and the flavor susceptibilities [Formula: see text] for [Formula: see text], [Formula: see text], [Formula: see text], [Formula: see text] in the [Formula: see text] flavor system, without changing the [Formula: see text]. We define the hadron–quark transition temperature with [Formula: see text]. For the [Formula: see text] flavor system, the transition line thus obtained is almost identical in [Formula: see text], [Formula: see text], [Formula: see text] planes, when the chemical potentials [Formula: see text] [Formula: see text] are smaller than 250 MeV. This [Formula: see text] approximate equivalence is also seen in the [Formula: see text] flavor system. We plot the phase diagram also in [Formula: see text], [Formula: see text], [Formula: see text], [Formula: see text] planes in order to investigate flavor dependence of transition lines. In the [Formula: see text] flavor system, [Formula: see text] quark does not affect the [Formula: see text] flavor subsystem composed of [Formula: see text], [Formula: see text], [Formula: see text]. Temperature dependence of the off-diagonal susceptibilities and the [Formula: see text] show that the transition region at [Formula: see text] is [Formula: see text] for both the [Formula: see text] and [Formula: see text] flavor systems.

scholarly journals QCD phase diagram at finite baryon and isospin chemical potentials

2010 ◽  
Vol 82 (11) ◽  
Author(s):  
Takahiro Sasaki ◽  
Yuji Sakai ◽  
Hiroaki Kouno ◽  
Masanobu Yahiro
Keyword(s):  
Phase Diagram ◽  
Qcd Phase Diagram ◽  
Chemical Potentials
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