scholarly journals Calculating the equation of state of dense quark-gluon plasma using the complex Langevin equation

2019 ◽  
Vol 100 (7) ◽  
Author(s):  
Dénes Sexty
Keyword(s):  
Equation Of State ◽  
Langevin Equation ◽  
Quark Gluon Plasma ◽  
Gluon Plasma

scholarly journals Phenomenological models of the quark-gluon plasma equation of state

2002 ◽  
Vol 106-107 ◽  
pp. 528-530
Author(s):  
Peter N. Meisinger ◽  
Travis R. Miller ◽  
Michael C. Ogilvie
Keyword(s):  
Equation Of State ◽  
Phenomenological Models ◽  
Quark Gluon Plasma ◽  
Gluon Plasma ◽  
Plasma Equation

scholarly journals Propagation of non-linear waves in hot, ideal, and non-extensive quark–gluon plasma

2020 ◽  
Vol 80 (7) ◽  
Author(s):  
Trambak Bhattacharyya ◽  
Abhik Mukherjee
Keyword(s):  
Equation Of State ◽  
Energy Density ◽  
Quark Gluon Plasma ◽  
Wave Solution ◽  
Density Perturbation ◽  
Gluon Plasma ◽  
Breaking Wave ◽  
Linear Waves ◽  
Momentum Distributions ◽  
Non Linear

Abstract We study the propagation of energy density perturbation in a hot, ideal quark–gluon medium in which quarks and gluons follow the Tsallis-like momentum distributions. We have observed that a non-extensive MIT bag equation of state obtained with the help of the quantum Tsallis-like distributions gives rise to a breaking wave solution of the equation dictating the evolution of energy density perturbation. However, the breaking of waves is delayed when the value of the Tsallis q parameter and the Tsallis temperature T are higher.

EQUATION OF STATE FOR QUARK GLUON PLASMA IN A RELATIVISTIC HARMONIC CONFINEMENT MODEL

1993 ◽  
Vol 08 (08) ◽  
pp. 749-755 ◽  
Author(s):  
S.B. KHADKIKAR ◽  
J.C. PARIKH ◽  
P.C. VINODKUMAR
Keyword(s):  
Equation Of State ◽  
Energy Density ◽  
Quark Gluon Plasma ◽  
Background Field ◽  
Gluon Plasma ◽  
Harmonic Mode ◽  
Small Quantum ◽  
Harmonic Confinement ◽  
Current Confinement ◽  
Confinement Model

A relativistic harmonic confinement model for quarks and a similar current confinement model for gluons have been used to obtain an equation of state for quark-gluon plasma. Such models may be deduced from QCD under certain approximations, by considering small quantum fluctuations about a background field. At high temperatures a T7 dependence of pressure and energy density is obtained with relativistic harmonic mode of confinement.

Non-perturbative effects for the Quark-Gluon Plasma equation of state

2012 ◽  
Vol 75 (7) ◽  
pp. 873-878 ◽  
Author(s):  
V. V. Begun ◽  
M. I. Gorenstein ◽  
O. A. Mogilevsky
Keyword(s):  
Equation Of State ◽  
Quark Gluon Plasma ◽  
Gluon Plasma ◽  
Plasma Equation

scholarly journals EXPLANATION OF THE RHIC HBT PUZZLE BY A GRANULAR SOURCE OF QUARK-GLUON PLASMA DROPLETS

2007 ◽  
Vol 16 (10) ◽  
pp. 3262-3270 ◽  
Author(s):  
WEI-NING ZHANG ◽  
CHEUK-YIN WONG
Keyword(s):  
Equation Of State ◽  
Quark Gluon Plasma ◽  
Gluon Plasma ◽  
Droplet Radius ◽  
Average Particle ◽  
Relativistic Hydrodynamics ◽  
Initial Radius ◽  
Lattice Gauge ◽  
Emission Time ◽  
Freeze Out

We present a review on the explanation of the RHIC HBT puzzle by a granular pion-emitting source of quark-gluon plasma droplets. The evolution of the droplet is described by relativistic hydrodynamics with an equation of state suggested by lattice gauge results. The granular source evolution is obtained by superposing all of the evolutions of individual droplets. Pions are assumed to be emitted thermally from the droplets at the freeze-out configuration characterized by a freeze-out temperature Tf. We find that the average particle emission time scales with the initial radius of the droplet. Pions will be emitted earlier if the droplet radius is smaller. An earlier emission time will lead to a smaller extracted HBT radius R out , while the extracted HBT radius R side is determined by the scale of the distribution of the droplet centers. However, a collective expansion of the droplets can further decrease R out . As a result, the value of R out /R side can be close to, or even less than 1 for the granular source of QGP droplets.

scholarly journals VIRIAL EXPANSION OF THE NUCLEAR EQUATION OF STATE

2012 ◽  
Vol 21 (01) ◽  
pp. 1250006 ◽  
Author(s):  
RUSLAN MAGANA ◽  
HUA ZHENG ◽  
ALDO BONASERA
Keyword(s):  
Phase Transition ◽  
Equation Of State ◽  
Nuclear Matter ◽  
Order Phase Transition ◽  
Quark Gluon Plasma ◽  
Ground State ◽  
Gluon Plasma ◽  
Second Order ◽  
Nuclear Equation Of State ◽  
Second Order Phase Transition

We study the equation of state (EOS) of nuclear matter as function of density. We expand the energy per particle (E/A) of symmetric infinite nuclear matter in powers of the density to take into account 2, 3, …, N-body forces. New EOS are proposed by fitting ground state properties of nuclear matter (binding energy, compressibility and pressure) and assuming that at high densities a second-order phase transition to the quark–gluon plasma (QGP) occurs. The latter phase transition is due to symmetry breaking at high density from nuclear matter (locally color white) to the QGP (globally color white). In the simplest implementation of a second-order phase transition we calculate the critical exponent δ by using Landau's theory of phase transition. We find δ = 3. Refining the properties of the EOS near the critical point gives δ = 5 in agreement with experimental results. We also discuss some scenarios for the EOS at finite temperatures.

STELLAR STRUCTURE FROM QCD

2012 ◽  
Vol 18 ◽  
pp. 91-95
Author(s):  
BRUNO FRANZON ◽  
F. S. NAVARRA ◽  
DAVID FOGAÇA
Keyword(s):  
Equation Of State ◽  
Quark Gluon Plasma ◽  
Mean Field ◽  
Gluon Plasma ◽  
Field Approximation ◽  
Compact Stars ◽  
Stellar Structure ◽  
Mean Field Approximation

Using an equation of state based on a mean-field approximation for QCD (MQCD) to describe the cold quark gluon plasma we study the stellar structure of compact stars.

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