scholarly journals Free energy of a static quark-antiquark pair and the renormalized Polyakov loop in three flavor QCD

2004 ◽  
Vol 70 (5) ◽  
Author(s):  
P. Petreczky ◽  
K. Petrov
Keyword(s):  
Free Energy ◽  
Polyakov Loop ◽  
Static Quark

scholarly journals Single quark entropy and the Polyakov loop

2016 ◽  
Vol 31 (35) ◽  
pp. 1630040 ◽  
Author(s):  
Johannes Heinrich Weber
Keyword(s):  
Free Energy ◽  
Quantum Chromodynamics ◽  
Wide Temperature Range ◽  
Weak Coupling ◽  
Quantitative Result ◽  
Polyakov Loop ◽  
Crossover Region ◽  
Quark Masses ◽  
Coupling Behavior ◽  
Static Quark

We study Quantum Chromodynamics (QCD) with 2 + 1 flavors with almost physical quark masses using the highly improved staggered quark action (HISQ). We calculate the Polyakov loop in a wide temperature range, obtain the free energy and the entropy of a single static quark and discuss the QCD crossover region in detail. We show that the entropy has a peak close to the chiral crossover and consider the consequences for the deconfinement aspects of the crossover phenomena. We study the renormalized Polyakov loop susceptibilities and place them into the context of the crossover. We also obtain a quantitative result for the onset of weak-coupling behavior at high temperatures.

scholarly journals Static quark-antiquark free energy and the running coupling at finite temperature

2004 ◽  
Vol 70 (7) ◽  
Author(s):  
O. Kaczmarek ◽  
F. Karsch ◽  
F. Zantow ◽  
P. Petreczky
Keyword(s):  
Free Energy ◽  
Finite Temperature ◽  
Running Coupling ◽  
Static Quark

Free energy of a baryon at finite temperatures and its implications to the heavy-ion collisions

2015 ◽  
Vol 30 (26) ◽  
pp. 1550130
Author(s):  
Minati Biswal ◽  
Sanatan Digal ◽  
P. S. Saumia
Keyword(s):  
Free Energy ◽  
Transition Temperature ◽  
Chemical Potential ◽  
Canonical Formalism ◽  
Heavy Ion ◽  
Polyakov Loop ◽  
Heavy Ion Collision ◽  
Hydrodynamic Simulations ◽  
Ion Collisions ◽  
Ion Collision

We study the free energy per baryon using canonical formalism in the Polyakov loop Nambu–Jona-Lasinio model with imaginary chemical potential. We find that the free energy decreases rapidly with temperature around the transition temperature. This result coupled with the heavy-ion collision geometry leads to the creation of a free energy well for the baryons. We study the time evolution of this free energy well using hydrodynamic simulations and discuss the implications of this free energy well on the dynamics of the baryons.

scholarly journals Heavy quark–antiquark free energy and the renormalized Polyakov loop

2002 ◽  
Vol 543 (1-2) ◽  
pp. 41-47 ◽  
Author(s):  
O Kaczmarek ◽  
F Karsch ◽  
P Petreczky ◽  
F Zantow
Keyword(s):  
Free Energy ◽  
Heavy Quark ◽  
Polyakov Loop

scholarly journals Dependence of the static quark free energy on μB and the crossover temperature of Nf=2+1 QCD

2019 ◽  
Vol 100 (5) ◽  
Author(s):  
Massimo D’Elia ◽  
Francesco Negro ◽  
Andrea Rucci ◽  
Francesco Sanfilippo
Keyword(s):  
Free Energy ◽  
Crossover Temperature ◽  
Static Quark

CHIRAL INTERFACE FOR QCD WITH DYNAMICAL FERMIONS

1992 ◽  
Vol 03 (05) ◽  
pp. 961-970 ◽  
Author(s):  
M. HACKEL ◽  
M. FABER ◽  
H. MARKUM ◽  
M. MÜLLER
Keyword(s):  
Free Energy ◽  
Gauge Theory ◽  
Domain Wall ◽  
Energy Distribution ◽  
Chiral Condensate ◽  
Differential Method ◽  
Polyakov Loop ◽  
The Other ◽  
Interface Tension ◽  
Spatial Volume

The free energy distribution across the interface of coexisting quark and hadron mat-ter is studied in the framework of lattice QCD. We calculate the interface tension α with the “differential method” for pure SU(3) gauge theory and in the presence of dynamical quarks with four flavors. Using lattices with spatial volume 82×16 it turns out that α is very small and compatible with zero. The chiral condensate indicates the same width of the domain wall as the Polyakov loop distribution and the other thermodynamical observables.

scholarly journals Polyakov loop eigenvalues in the presence of baryon chemical potential

2020 ◽  
Vol 28 (2) ◽  
pp. 39-50
Author(s):  
O. Borisenko ◽  
V. Chelnokov ◽  
S. Voloshyn
Keyword(s):  
Phase Diagram ◽  
Free Energy ◽  
Gauge Theory ◽  
Lattice Qcd ◽  
Effective Action ◽  
Chemical Potential ◽  
Baryon Density ◽  
Polyakov Loop ◽  
Baryon Chemical Potential ◽  
Pure Gauge Theory

The eigenvalues of the Polyakov loop are calculated in the strong coupled lattice QCD at finite tempera­ture. This is done both in the pure gauge theory and in the theory with heavy quarks at finite baryon chemical potential. Computations are performed in the mean­field like approach to the effective action. Using the eigenvalues obtained we also evaluate the free energy, real and imaginary parts of the Polyakov loops and the baryon density. The phase diagram of the model and influence of the baryon chemical potential are discussed in details. We underline a similarity between our calculations and continuum derivations of the phenomenon of A0 condensation.

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