scholarly journals Hard-thermal-loop resummation of the free energy of a quark-gluon plasma

2000 ◽  
Vol 61 (7) ◽  
Author(s):  
Jens O. Andersen ◽  
Eric Braaten ◽  
Michael Strickland
Keyword(s):  
Free Energy ◽  
Quark Gluon Plasma ◽  
Gluon Plasma ◽  
Hard Thermal Loop

Expansion of Free Energy in the Field of Magnetized Quark–Gluon Plasma

2021 ◽  
pp. 149-155
Author(s):  
Yogesh Kumar ◽  
Poonam Jain ◽  
Sanjeev Kumar ◽  
R. K. Meena ◽  
M. S. Khan
Keyword(s):  
Free Energy ◽  
Quark Gluon Plasma ◽  
Gluon Plasma

scholarly journals Perturbative QCD at High Temperature

1997 ◽  
Vol 12 (08) ◽  
pp. 1431-1464 ◽  
Author(s):  
Agustin Nieto
Keyword(s):  
Field Theory ◽  
Free Energy ◽  
Perturbation Theory ◽  
High Temperature ◽  
Perturbative Qcd ◽  
Effective Field Theory ◽  
Quark Gluon Plasma ◽  
Gluon Plasma ◽  
Effective Field ◽  
Recent Developments

Recent developments of perturbation theory at finite temperature based on effective field theory methods are reviewed. These methods allow the contributions from the different scales to be separated and the perturbative series to be reorganized. The construction of the effective field theory is shown in detail for ϕ4 theory and QCD. It is applied to the evaluation of the free energy of QCD at order g5 and the calculation of the g6 term is outlined. Implications for the application of perturbative QCD to the quark–gluon plasma are also discussed.

scholarly journals Hard-Thermal-Loop Resummed Pressure of a Degenerate Quark-Gluon Plasma

2000 ◽  
Vol 84 (10) ◽  
pp. 2100-2103 ◽  
Author(s):  
Rudolf Baier ◽  
Krzysztof Redlich
Keyword(s):  
Quark Gluon Plasma ◽  
Gluon Plasma ◽  
Hard Thermal Loop

Refractive index of light and the quark-gluon plasma

Open Physics ◽  
2012 ◽  
Vol 10 (6) ◽  
Author(s):  
Juan Liu ◽  
Min-Jie Luo ◽  
Hao-Jie Xu
Keyword(s):  
Refractive Index ◽  
Perturbation Theory ◽  
Quark Gluon Plasma ◽  
Gluon Plasma ◽  
Strongly Coupled ◽  
Hard Thermal Loop ◽  
Optical Phenomenon ◽  
Weakly Coupled ◽  
Holographic Approach

AbstractThe refractive index (RI) of light propagating in a medium of quark-gluon plasma (QGP) is studied. The weakly coupled QGP is studied in the framework of hard-thermal-loop (HTL) perturbation theory, and the strongly coupled one is treated based on the holographic approach. In more realistic setups, the feasibility of observing the optical phenomenon related to the RI of QGP is also discussed.

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

Dilepton production in finite baryonic quark–gluon plasma

2012 ◽  
Vol 90 (10) ◽  
pp. 955-961 ◽  
Author(s):  
Yogesh Kumar ◽  
S. Somorendro Singh
Keyword(s):  
Free Energy ◽  
Quark Gluon Plasma ◽  
Chemical Potential ◽  
Gluon Plasma ◽  
Mass Region ◽  
Dilepton Production ◽  
Chemical Potentials ◽  
Dynamical Quark Mass ◽  
Low Mass ◽  
Thermodynamic Variables

We study the evolution of hot plasma through a statistical model in the hadronic medium. Evolution of the plasma can be expressed by the free energy at finite temperature and quark chemical potential of the constituent particles in the system. In this study, the dynamical quark mass is dependent on momentum and temperature. The evolution is explained through thermodynamic variables like free energy and entropy curve. These variables show the behaviour of the system for the different chemical potentials, μ, at these transition temperatures T = 150–170 MeV. Moreover, the study of the dilepton production at these finite temperatures and quark chemical potentials from the fireball of quark–gluon plasma shows a specific structure of dilepton spectrum in the intermediate mass region of 1.0–4.0 GeV and its production rate is observed to be a strong increasing function of quark chemical potential for quark and antiquark annihilation. We further observe lepton spectra coming from the hadronic phase in the low mass M = 0–1.2 GeV region.

scholarly journals Free Energy Evolution and Photon Radiation from QGP

2013 ◽  
Vol 2013 ◽  
pp. 1-8 ◽  
Author(s):  
Yogesh Kumar ◽  
S. Somorendro Singh
Keyword(s):  
Free Energy ◽  
Transverse Momentum ◽  
Statistical Model ◽  
Quark Gluon Plasma ◽  
Quark Mass ◽  
Gluon Plasma ◽  
Direct Photon ◽  
Photon Radiation ◽  
Energy Evolution ◽  
Experimental Works

We investigate a simple statistical model of quark-gluon plasma (QGP) formation. In the model, we use a phenomenological parameter which enhances the growth of quark droplet formation and also stabilizes the formation of the QGP droplet. Then, we study direct photon radiation through annihilation and Compton processes from these stabilized QGP incorporating the parametrized momentum factor in the quark mass. The production rate of thermal photon is found to be dominated in the low transverse momentum and increases a little in comparison to the recent development of direct photon radiation of other theoretical and experimental works.

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