scholarly journals The thermodynamics of the quark–gluon plasma: Self-consistent resummations vs. lattice data

2002 ◽  
Vol 698 (1-4) ◽  
pp. 404-407 ◽  
Author(s):  
J.-P. Blaizot ◽  
E. Iancu ◽  
A. Rebhan
Keyword(s):  
Quark Gluon Plasma ◽  
Gluon Plasma ◽  
Lattice Data ◽  
Self Consistent

scholarly journals A CONSISTENT QUASIPARTICLE PICTURE OF QUARK–GLUON PLASMA AND THE VELOCITY OF SOUND

2006 ◽  
Vol 21 (27) ◽  
pp. 2067-2077 ◽  
Author(s):  
SANJAY K. GHOSH ◽  
TAMAL K. MUKHERJEE ◽  
SIBAJI RAHA
Keyword(s):  
Quark Gluon Plasma ◽  
Quark Mass ◽  
Gluon Plasma ◽  
Velocity Of Sound ◽  
Lattice Data ◽  
Mass Model ◽  
Density Dependent ◽  
Quasiparticle Picture

A thermodynamically consistent density dependent quark mass model has been used to study the velocity of sound in a hot quark–gluon plasma. The results are compared with the recent lattice data.

scholarly journals Nonperturbative quark–gluon thermodynamics at finite density

2018 ◽  
Vol 33 (08) ◽  
pp. 1850043 ◽  
Author(s):  
M. A. Andreichikov ◽  
M. S. Lukashov ◽  
Yu. A. Simonov
Keyword(s):  
Quark Gluon Plasma ◽  
Integral Form ◽  
Magnetic Confinement ◽  
Gluon Plasma ◽  
Analytic Structure ◽  
Branch Points ◽  
Lattice Data ◽  
Finite Density ◽  
First Time ◽  
Good Agreement

Thermodynamics of the quark–gluon plasma at finite density is studied in the framework of the Field Correlator Method, where thermodynamical effects of Polyakov loops and color magnetic confinement are taken into account. Having found good agreement with numerical lattice data for zero density, we calculate pressure [Formula: see text], for [Formula: see text] MeV and [Formula: see text] MeV. For the first time, the explicit integral form is found in this region, demonstrating analytic structure in the complex [Formula: see text] plane. The resulting multiple complex branch points are found at the Roberge–Weiss values of [Formula: see text], with [Formula: see text] defined by the values of Polyakov lines and color magnetic confinement.

scholarly journals Self-consistent hard-thermal-loop thermodynamics for the quark-gluon plasma

1999 ◽  
Vol 470 (1-4) ◽  
pp. 181-188 ◽  
Author(s):  
J.-P. Blaizot ◽  
E. Iancu ◽  
A. Rebhan
Keyword(s):  
Quark Gluon Plasma ◽  
Gluon Plasma ◽  
Hard Thermal Loop ◽  
Self Consistent

PHENOMENOLOGICAL MODELS OF GLUON PLASMA IN THE LARGE TEMPERATURE RANGE

2013 ◽  
Vol 28 (25) ◽  
pp. 1350121 ◽  
Author(s):  
P. SIMJI ◽  
VISHNU M. BANNUR
Keyword(s):  
Equation Of State ◽  
Phenomenological Models ◽  
Quark Gluon Plasma ◽  
Heavy Ion ◽  
Gluon Plasma ◽  
Coupling Constants ◽  
Relativistic Heavy Ion Collisions ◽  
Large Temperature ◽  
Lattice Data ◽  
Temperature Range

Quasiparticle quark–gluon plasma (qQGP) model and strongly coupled quark–gluon plasma (SCQGP) are two different phenomenological models of quark–gluon plasma (QGP) that try to explain the nonideal behavior seen in lattice simulation of QCD and in relativistic heavy ion collisions. These models almost successfully explain the existing lattice data up to 5Tc. Here, we investigate how better these models fit the recent lattice data results of precision SU(3) thermodynamics for a large temperature range (up to 1000Tc) by studying the statistical mechanics and thermodynamics of gluon plasma and hence we have a complete phenomenological description of the equation of state of QGP from the phase transition through the perturbative region up to Stefan–Boltzmann limit. We also study the effect of orders of running coupling constants on the models and used the equation of state obtained using these models in predicting behavior of quantity like velocity of sound in high temperature, which has no lattice QCD results for such high temperatures.

scholarly journals THERMODYNAMIC AND STATISTICAL MECHANICS INCONSISTENCIES IN QUASIPARTICLE MODELS

2013 ◽  
Vol 28 (02) ◽  
pp. 1350006 ◽  
Author(s):  
VISHNU M. BANNUR
Keyword(s):  
Statistical Mechanics ◽  
Phenomenological Models ◽  
Quark Gluon Plasma ◽  
Gluon Plasma ◽  
Point Of View ◽  
Nucl Phys ◽  
Large Temperature ◽  
Lattice Data ◽  
Lattice Gauge ◽  
Quasiparticle Model

Here we reanalyze various quasiparticle models of quark gluon plasma from the statistical mechanics and thermodynamics point of view. We investigate the statistical mechanics and thermodynamics inconsistencies involved in these models and their consequences in the observables. Quasiparticle models are phenomenological models with few parameters and by adjusting them all models fit the results of lattice gauge simulation of gluon plasma [G. Boyd et al., Phys. Rev. Lett.75, 4169 (1995); G. Boyd et al., Nucl. Phys. B469, 419 (1996)]. However, after fixing two of the three parameters of the model by physical arguments, only one quasiparticle model, which is consistent with both statistical mechanics and thermodynamics, fits the Bielefeld lattice data [G. Boyd et al., Phys. Rev. Lett.75, 4169 (1995); G. Boyd et al., Nucl. Phys. B469, 419 (1996)]. The same model also fits the recent lattice results of Wuppertal–Budapest group [S. Borsanyi et al., arXiv:1204.6184v1 [hep-lat]], which deals with precision SU(3) thermodynamics for a large temperature range, reasonably well.

scholarly journals THERMODYNAMICS OF (2+1) FLAVOR QGP IN QUASIPARTICLE MODEL

2012 ◽  
Vol 21 (11) ◽  
pp. 1250090 ◽  
Author(s):  
VISHNU M. BANNUR
Keyword(s):  
Quantum Chromodynamics ◽  
Quark Gluon Plasma ◽  
Chemical Potential ◽  
Scale Parameter ◽  
Gluon Plasma ◽  
Single Parameter ◽  
Lattice Data ◽  
Lattice Simulation ◽  
Quasiparticle Model

Using our recently developed one parameter quasiparticle model, we analyze more recent (refined) results of (2+1)-flavor quark–gluon plasma (QGP) in lattice simulation of quantum chromodynamics (QCD) by various groups [S. Borsanyi et al., arXiv:1007.2580v2; A. Bazavov et al., Phys. Rev. D80 (2009) 014504; T. Umeda et al., arXiv:1011.2548v1; C. DeTar et al., Phys. Rev. D81 (2010) 114504]. We got a remarkable good fit to lattice thermodynamics of [S. Borsanyi et al., arXiv:1007.2580v2] and reasonable good fit to [A. Bazavov et al., Phys. Rev. D80 (2009) 014504] by adjusting single parameter of the model which may be related QCD scale parameter. The same model also fits the lattice results of [S. Borsanyi et al., arXiv:1007.2580v2] on (2+1+1)-flavor QGP. Further, we extend our model for above system with zero chemical potential to nonzero chemical potential and predict quark density without any new parameters which may be compared with future lattice data.

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