scholarly journals Pion condensation and phase diagram in the Polyakov-loop quark-meson model

2018 ◽  
Vol 98 (7) ◽  
Author(s):  
Prabal Adhikari ◽  
Jens O. Andersen ◽  
Patrick Kneschke
Keyword(s):  
Phase Diagram ◽  
Polyakov Loop ◽  
Pion Condensation

scholarly journals Spectrum of QCD at Finite Isospin Density

2018 ◽  
Vol 175 ◽  
pp. 07042 ◽  
Author(s):  
Philipp Scior ◽  
Lorenz von Smekal ◽  
Dominik Smith
Keyword(s):  
Phase Diagram ◽  
Low Temperature ◽  
Temperature Region ◽  
Chemical Potential ◽  
Phase Diagram Of Qcd ◽  
Baryon Density ◽  
Polyakov Loop ◽  
High Chemical ◽  
Pion Condensation

We study the phase diagram of QCD at finite isospin density using two flavors of staggered quarks. We investigate the low temperature region of the phase diagram where we find a pion condensation phase at high chemical potential. We started a basic analysis of the spectrum at finite isospin density. In particular, we measured pion, rho and nucleon masses inside and outside of the pion condensation phase. In agreement with previous studies in two-color QCD at finite baryon density we find that the Polyakov loop does not depend on the density in the staggered formulation.

scholarly journals Pion condensation and the QCD phase diagram at finite isospin density

2019 ◽  
Author(s):  
Jens Oluf Andersen ◽  
Prabal Adhikari ◽  
Patrick Kneschke
Keyword(s):  
Phase Diagram ◽  
Pion Condensation ◽  
Qcd Phase Diagram

scholarly journals Polyakov loop models in the large N limit: Phase diagram at finite density

2022 ◽  
Vol 105 (1) ◽  
Author(s):  
O. Borisenko ◽  
V. Chelnokov ◽  
S. Voloshyn
Keyword(s):  
Phase Diagram ◽  
Polyakov Loop ◽  
Finite Density ◽  
Large N

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

scholarly journals EFFECTS OF MODEL PARAMETERS IN THERMODYNAMICS OF THE PNJL MODEL

2012 ◽  
Vol 27 (03n04) ◽  
pp. 1250013 ◽  
Author(s):  
A. V. FRIESEN ◽  
YU. L. KALINOVSKY ◽  
V. D. TONEEV
Keyword(s):  
Phase Diagram ◽  
Thermodynamic Properties ◽  
Effective Potential ◽  
Chemical Potential ◽  
Dense Matter ◽  
Polyakov Loop ◽  
Model Parameters ◽  
Lattice Data ◽  
Data Set ◽  
Pnjl Model

The thermodynamic behavior of the two-flavor (Nf = 2) three-color (Nc = 3) Polyakov-loop-extended Nambu–Jona-Lasinio (PNJL) model at the finite chemical potential is investigated. New lattice gluon data for gluon thermodynamics are used defining the effective potential within polynomial and logarithmic forms of its approximation. We study the effects of using different sets of data and different forms of the potential on thermodynamic properties of hot and dense matter. It is found that the PNJL thermodynamics depends stronger on the form of the effective potential than on the used lattice data set. Particular attention is paid to the phase diagram in the (T, μ) plane.

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 Electrical neutrality and $$\beta $$-equilibrium conditions in dense quark matter: generation of charged pion condensation by chiral imbalance

2020 ◽  
Vol 80 (10) ◽  
Author(s):  
T. G. Khunjua ◽  
K. G. Klimenko ◽  
R. N. Zhokhov
Keyword(s):  
Phase Diagram ◽  
Neutron Star ◽  
Quark Matter ◽  
Quark Mass ◽  
Charged Pion ◽  
Heavy Ion ◽  
Pion Condensation ◽  
Dense Quark Matter ◽  
Current Quark Mass ◽  
Current Quark

AbstractThe phase diagram of dense quark matter with chiral imbalance is considered with the conditions of electric neutrality and $$\beta $$ β -equilibrium. It has been shown recently that chiral imbalance can generate charged pion condensation (PC) in dense quark matter. It was, therefore, interesting to verify that this phenomenon takes place in realistic physical scenarios such as electrically neutral quark matter in $$\beta $$ β -equilibrium, because a window of charged PC at dense quark matter phase diagram (without chiral imbalance) predicted earlier was closed by the consideration of these conditions at the physical current quark mass. In this paper it has been shown that the charged PC phenomenon is generated by chiral imbalance in the dense electric neutral quark/baryonic matter in $$\beta $$ β -equilibrium, i.e. matter in neutron stars. It has also been demonstrated that charged PC is an inevitable phenomenon in dense quark matter with chiral imbalance if there is nonzero chiral imbalance in two forms, chiral and chiral isospin one. It seems that in this case charged PC phase can be hardly avoided by any physical constraint on isospin imbalance and that this conclusion can be probably generalized from neutron star matter to the matter produced in heavy ion collisions or in neutron star mergers. The chiral limit and the physical point (physical pion mass) have both been considered and it was shown that the appearance of charged PC is not much affected by the consideration of nonzero current quark mass.

scholarly journals Phase Diagram and Critical Properties within an Effective Model of QCD: The Nambu–Jona-Lasinio Model Coupled to the Polyakov Loop

Symmetry ◽  
2010 ◽  
Vol 2 (3) ◽  
pp. 1338-1374 ◽  
Author(s):  
Pedro Costa ◽  
Maria C. Ruivo ◽  
Célia A. De Sousa ◽  
Hubert Hansen
Keyword(s):  
Phase Diagram ◽  
Polyakov Loop ◽  
Effective Model ◽  
Critical Properties
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