Quantum chromodynamics at finite temperature and the quark-gluon plasma

2002 ◽  
Author(s):  
T. Hatsuda
Keyword(s):  
Quantum Chromodynamics ◽  
Quark Gluon Plasma ◽  
Finite Temperature ◽  
Gluon Plasma

scholarly journals Survival of B c mesons in a hot plasma within a potential model

Open Physics ◽  
2014 ◽  
Vol 12 (11) ◽  
Author(s):  
Wanda Alberico ◽  
Stefano Carignano ◽  
Piotr Czerski ◽  
Arturo Pace ◽  
Marzia Nardi ◽  
...  
Keyword(s):  
Quark Gluon Plasma ◽  
Finite Temperature ◽  
Energy Region ◽  
Potential Model ◽  
Bound State ◽  
Gluon Plasma ◽  
Hot Plasma

AbstractWe extend a previous work on the study of heavy charmonia and bottomonia in a deconfined quark-gluon plasma by considering the B c family of mesons. With the introduction of this bound state of a charm and a beauty quark, we investigate at finite temperature the behavior of the quarkonium, in an energy region between the ψ and the Y states.

scholarly journals Meson correlation function and screening mass in thermal QCD

Open Physics ◽  
2012 ◽  
Vol 10 (2) ◽  
Author(s):  
Piotr Czerski
Keyword(s):  
Correlation Function ◽  
Quantum Chromodynamics ◽  
Quark Gluon Plasma ◽  
Correlation Functions ◽  
Large Distance ◽  
Spatial Dependence ◽  
Gluon Plasma ◽  
Perturbative Quantum Chromodynamics ◽  
Perturbative Quantum ◽  
Distance Limit

AbstractAnalytical results for the spatial dependence of the correlation functions for all meson excitations in perturbative Quantum Chromodynamics, the lowest order, are calculated. The meson screening mass is obtained as a large distance limit of the correlation function. Our analysis leads to a better understanding of the excitations of Quark Gluon Plasma at sufficiently large temperatures and may be of relevance for future numerical calculations with fully interacting Quantum Chromodynamics.

scholarly journals PLASMON INTERACTIONS IN THE QUARK–GLUON PLASMA

2001 ◽  
Vol 16 (07) ◽  
pp. 1249-1259 ◽  
Author(s):  
D. METAXAS ◽  
V. P. NAIR
Keyword(s):  
Perturbation Theory ◽  
Quark Gluon Plasma ◽  
Finite Temperature ◽  
Gluon Plasma ◽  
Creation And Annihilation Operators ◽  
Yang Mills ◽  
Starting Point ◽  
Hard Thermal Loops

We construct plasmon creation and annihilation operators for Yang–Mills theory at finite temperature. This provides a starting point for perturbation theory with resummation of hard thermal loops in a Hamiltonian framework.

scholarly journals Multidimensional Schrödinger Equation and Spectral Properties of Heavy-Quarkonium Mesons at Finite Temperature

2016 ◽  
Vol 2016 ◽  
pp. 1-7 ◽  
Author(s):  
M. Abu-Shady
Keyword(s):  
Schrödinger Equation ◽  
Quark Gluon Plasma ◽  
Plasma Diagnostics ◽  
Finite Temperature ◽  
Schrodinger Equation ◽  
Gluon Plasma ◽  
Wave Functions ◽  
Heavy Quarkonium ◽  
Energy Eigenvalues ◽  
Radial Schrödinger Equation

TheN-radial Schrödinger equation is analytically solved at finite temperature. The analytic exact iteration method (AEIM) is employed to obtain the energy eigenvalues and wave functions for all statesnandl. The application of present results to the calculation of charmonium and bottomonium masses at finite temperature is also presented. The behavior of the charmonium and bottomonium masses is in qualitative agreement with other theoretical methods. We conclude that the solution of the Schrödinger equation plays an important role at finite temperature that the analysis of the quarkonium states gives a key input to quark-gluon plasma diagnostics.

scholarly journals Fermi Excitations in Hot and Dense Quark–Gluon Plasma

1997 ◽  
Vol 12 (05) ◽  
pp. 347-356 ◽  
Author(s):  
O. K. Kalashnikov
Keyword(s):  
Green Function ◽  
Quark Gluon Plasma ◽  
Finite Temperature ◽  
Gluon Plasma ◽  
Function Technique ◽  
Long Wavelength ◽  
Wavelength Limit ◽  
Effective Masses ◽  
Feynman Gauge

The Fermi excitations in hot and dense quark–gluon plasma are studied in the Feynman gauge using the temperature Green function technique. We find four well-separated spectrum branches for all |q| in the case m=0 and establish the additional splitting between them (four different effective masses) when m≠0. The long wavelength limit of these excitations is found in the general case of the massive fermions at finite temperature and baryon densities to give the exact one-loop spectrum. This spectrum exhibits many known results as its different limits.

scholarly journals In-Medium Effects in the Holographic Quark-Gluon Plasma

2010 ◽  
Vol 2010 ◽  
pp. 1-141 ◽  
Author(s):  
Felix Rust
Keyword(s):  
Quark Gluon Plasma ◽  
Finite Temperature ◽  
Gauge Theories ◽  
Particle Density ◽  
Gluon Plasma ◽  
Strongly Coupled ◽  
Yang Mills ◽  
Fundamental Matter ◽  
Gauge Gravity ◽  
Gravity Duality

We use the gauge/gravity duality to investigate various properties of strongly coupled gauge theories, which we interpret as models for the quark-gluon plasma (QGP). In particular, we use variants of the D3/D7 setup as an implementation of the top-down approach of connecting string theory with phenomenologically relevant gauge theories. We focus on the effects of finite temperature and finite density on fundamental matter in the holographic quark-gluon plasma, which we model as theN=2hypermultiplet in addition to theN=4gauge multiplet of supersymmetric Yang-Mills theory. We use a setup in which we can describe the holographic plasma at finite temperature and either baryon or isospin density and investigate the properties of the system from three different viewpoints. (i) We study meson spectra. Our observations at finite temperature and particle density are in qualitative agreement with phenomenological models and experimental observations. They agree with previous publications in the according limits. (ii) We study the temperature and density dependence of transport properties of fundamental matter in the QGP. In particular, we obtain diffusion coefficients. Furthermore, in a kinetic model we estimate the effects of the coupling strength on meson diffusion and therewith equilibration processes in the QGP. (iii) We observe the effects of finite temperature and density on the phase structure of fundamental matter in the holographic QGP. We trace out the phase transition lines of different phases in the phase diagram.

scholarly journals Thermodynamics and statistical physics of quasiparticles within the quark–gluon plasma model

2020 ◽  
Vol 35 (23) ◽  
pp. 2050194
Author(s):  
Vladimir Dzhunushaliev ◽  
Vladimir Folomeev ◽  
Tlekkabul Ramazanov ◽  
Tolegen Kozhamkulov
Keyword(s):  
Phase Transition ◽  
Thermodynamic Properties ◽  
Quantum Chromodynamics ◽  
Internal Energy ◽  
Quark Gluon Plasma ◽  
Statistical Physics ◽  
Gluon Plasma ◽  
Plasma Model ◽  
Van Der Waals Equation ◽  
Average Value

We consider thermodynamic properties of a quark–gluon plasma related to quasiparticles having the internal structure. For this purpose, we employ a possible analogy between quantum chromodynamics and non-Abelian Proca-Dirac-Higgs theory. The influence of characteristic sizes of the quasiparticles on such thermodynamic properties of the quark–gluon plasma like the internal energy and pressure is studied. Sizes of the quasiparticles are taken into account in the spirit of the van der Waals equation but we take into consideration that the quasiparticles have different sizes, and the average value of these sizes depends on temperature. It is shown that this results in a change in the internal energy and pressure of the quark–gluon plasma. Also, we show that, when the temperature increases, the average value of characteristic sizes of the quasiparticles increases as well. This leads to the occurrence of a phase transition at the temperature at which the volume occupied by the quasiparticles is compared with the volume occupied by the plasma.

La physique de la matière hadronique à haute température telle que décrite par la chromodynamique quantique sur réseau espace–temps

1989 ◽  
Vol 67 (12) ◽  
pp. 1228-1249 ◽  
Author(s):  
Jean Potvin
Keyword(s):  
Phase Transition ◽  
Numerical Simulation ◽  
High Temperature ◽  
Critical Temperature ◽  
Quantum Chromodynamics ◽  
Quark Gluon Plasma ◽  
Gluon Plasma ◽  
Heavy Quarks ◽  
Hadronic Matter ◽  
The Past

The numerical simulation of quantum chromodynamics on a space–time lattice allows for the calculation of many properties of hadronic matter at high temperature in a direct and in a nonperturbative fashion. This paper will be a review of the calculation techniques and results published in the past 5 years. Among other things, I will discuss the order of the phase transition, the critical temperature, the force between heavy quarks, as well as the thermodynamics and the spectroscopy of the quark–gluon plasma.

Sign in / Sign up

Export Citation Format

Share Document