scholarly journals Importance of Imaginary Chemical Potential for QCD Phase Diagram in the PNJL Model

2010 ◽  
Vol 186 ◽  
pp. 540-544
Author(s):  
Kouji Kashiwa ◽  
Hiroaki Kouno ◽  
Takeshi Matsumoto ◽  
Yuji Sakai ◽  
Masanobu Yahiro
Keyword(s):  
Phase Diagram ◽  
Chemical Potential ◽  
Qcd Phase Diagram ◽  
Pnjl Model

scholarly journals Using the Linear Sigma Model with quarks to describe the QCD phase diagram and to locate the critical end point

2018 ◽  
Vol 172 ◽  
pp. 08002
Author(s):  
Alejandro Ayala ◽  
Jorge David Castaño-Yepes ◽  
José Antonio Flores ◽  
Saúl Hernández ◽  
Luis Hernández
Keyword(s):  
Phase Diagram ◽  
Critical Temperature ◽  
Sigma Model ◽  
Chemical Potential ◽  
Linear Sigma Model ◽  
Transition Line ◽  
Baryon Chemical Potential ◽  
First Order ◽  
Qcd Phase Diagram ◽  
Crossover Transition

We study the QCD phase diagram using the linear sigma model coupled to quarks. We compute the effective potential at finite temperature and quark chemical potential up to ring diagrams contribution. We show that, provided the values for the pseudo-critical temperature Tc = 155 MeV and critical baryon chemical potential μBc ≃ 1 GeV, together with the vacuum sigma and pion masses. The model couplings can be fixed and that these in turn help to locate the region where the crossover transition line becomes first order.

scholarly journals Imaginary Chemical Potential, NJL-Type Model and Confinement–Deconfinement Transition

Symmetry ◽  
2019 ◽  
Vol 11 (4) ◽  
pp. 562 ◽  
Author(s):  
Kouji Kashiwa
Keyword(s):  
Phase Diagram ◽  
Finite Temperature ◽  
Crucial Role ◽  
Chemical Potential ◽  
Type Model ◽  
Qcd Phase Diagram

In this review, we present of an overview of several interesting properties of QCD at finite imaginary chemical potential and those applications to exploring the QCD phase diagram. The most important properties of QCD at a finite imaginary chemical potential are the Roberge–Weiss periodicity and the transition. We summarize how these properties play a crucial role in understanding QCD properties at finite temperature and density. This review covers several topics in the investigation of the QCD phase diagram based on the imaginary chemical potential.

scholarly journals Effects of Superstatistics on the Location of the Effective QCD Critical End Point

2019 ◽  
Vol 64 (8) ◽  
pp. 665
Author(s):  
A. Ayala ◽  
M. Hentschinski ◽  
L. A. Hernández ◽  
M. Loewe ◽  
R. Zamora
Keyword(s):  
Phase Diagram ◽  
Chemical Potential ◽  
Heavy Ion ◽  
Relativistic Heavy Ion Collisions ◽  
Chiral Symmetry Restoration ◽  
Interaction Volume ◽  
Qcd Phase Diagram ◽  
End Point ◽  
Ion Collisions ◽  
Effective Description

Effects of the partial thermalization during the chiral symmetry restoration at the finite temperature and quark chemical potential are considered for the position of the critical end point in an effective description of the QCD phase diagram. We find that these effects cause the critical end point to be displaced toward larger values of the temperature and lower values of the quark chemical potential, as compared to the case where the system can be regarded as completely thermalized. These effects may be important for relativistic heavy ion collisions, where the number of subsystems making up the whole interaction volume can be linked to the finite number of participants in the reaction.

scholarly journals Study of the QCD phase diagram with a nonzero chiral chemical potential

2016 ◽  
Vol 93 (3) ◽  
Author(s):  
V. V. Braguta ◽  
E.-M. Ilgenfritz ◽  
A. Yu. Kotov ◽  
B. Petersson ◽  
S. A. Skinderev
Keyword(s):  
Phase Diagram ◽  
Chemical Potential ◽  
Qcd Phase Diagram

scholarly journals Strangeness at Intermediate Baryon Density

2018 ◽  
Vol 171 ◽  
pp. 02002
Author(s):  
David Tlusty
Keyword(s):  
Phase Diagram ◽  
Nuclear Physics ◽  
Chemical Potential ◽  
Gluon Plasma ◽  
Baryon Density ◽  
Density Region ◽  
Qcd Phase Diagram ◽  
Theoretical Predictions ◽  
Hadron Gas ◽  
Phase Equilibrium Curve

Exploration of the QCD phase diagram has been one of the main programs of contemporary nuclear physics. The intermediate baryon density region covers a broad range of the baryon chemical potential, between 100 and 700 MeV, and is expected to include a possible critial point at the end of a phase equilibrium curve between the hadron gas and quark gluon plasma phases. Experimental programs at the SPS and RHIC facilities have provided valuable insights in this range. These proceedings motivate the exploration of the QCD phase diagram through the use of strangeness. A selection of relevant experimental results from RHIC and SPS beam energy scan programs with associated theoretical predictions is presented along with a discussion of possible physical conclusions and future plans.

scholarly journals Determination of QCD phase diagram from the imaginary chemical potential region

2009 ◽  
Vol 79 (9) ◽  
Author(s):  
Yuji Sakai ◽  
Kouji Kashiwa ◽  
Hiroaki Kouno ◽  
Masayuki Matsuzaki ◽  
Masanobu Yahiro
Keyword(s):  
Phase Diagram ◽  
Chemical Potential ◽  
Potential Region ◽  
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.

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