scholarly journals Photon and dilepton production in the quark-gluon plasma: perturbation theory versus lattice QCD

2005 ◽  
Vol 43 (1-4) ◽  
pp. 375-380 ◽  
Author(s):  
J.-P. Blaizot ◽  
F. Gelis
Keyword(s):  
Perturbation Theory ◽  
Lattice Qcd ◽  
Quark Gluon Plasma ◽  
Gluon Plasma ◽  
Dilepton Production ◽  
Theory Versus ◽  
Plasma Perturbation

scholarly journals Quark Cluster Expansion Model for Interpreting Finite-T Lattice QCD Thermodynamics

Symmetry ◽  
2021 ◽  
Vol 13 (3) ◽  
pp. 514
Author(s):  
David Blaschke ◽  
Kirill A. Devyatyarov ◽  
Olaf Kaczmarek
Keyword(s):  
Lattice Qcd ◽  
Cluster Expansion ◽  
Quark Gluon Plasma ◽  
Degrees Of Freedom ◽  
Gluon Plasma ◽  
Polyakov Loop ◽  
Unified Approach ◽  
Narrow Temperature Interval ◽  
Levinson Theorem ◽  
Expansion Model

In this work, we present a unified approach to the thermodynamics of hadron–quark–gluon matter at finite temperatures on the basis of a quark cluster expansion in the form of a generalized Beth–Uhlenbeck approach with a generic ansatz for the hadronic phase shifts that fulfills the Levinson theorem. The change in the composition of the system from a hadron resonance gas to a quark–gluon plasma takes place in the narrow temperature interval of 150–190 MeV, where the Mott dissociation of hadrons is triggered by the dropping quark mass as a result of the restoration of chiral symmetry. The deconfinement of quark and gluon degrees of freedom is regulated by the Polyakov loop variable that signals the breaking of the Z(3) center symmetry of the color SU(3) group of QCD. We suggest a Polyakov-loop quark–gluon plasma model with O(αs) virial correction and solve the stationarity condition of the thermodynamic potential (gap equation) for the Polyakov loop. The resulting pressure is in excellent agreement with lattice QCD simulations up to high temperatures.

scholarly journals Dilepton production in a chemically equilibrating, expanding, and hadronizing quark-gluon plasma

1995 ◽  
Vol 52 (5) ◽  
pp. 2704-2713 ◽  
Author(s):  
B. Kämpfer ◽  
O. P. Pavlenko ◽  
A. Peshier ◽  
G. Soff
Keyword(s):  
Quark Gluon Plasma ◽  
Gluon Plasma ◽  
Dilepton Production

scholarly journals Two-loop contribution to high mass dilepton production by a quark-gluon plasma

2000 ◽  
Vol 62 (2) ◽  
Author(s):  
J. I. Kapusta ◽  
S. M. H. Wong
Keyword(s):  
Quark Gluon Plasma ◽  
Gluon Plasma ◽  
High Mass ◽  
Dilepton Production ◽  
Loop Contribution

scholarly journals Low-mass dilepton production through transport processes in a quark-gluon plasma

2012 ◽  
Vol 85 (5) ◽  
Author(s):  
Yukinao Akamatsu ◽  
Hideki Hamagaki ◽  
Tetsuo Hatsuda ◽  
Tetsufumi Hirano
Keyword(s):  
Quark Gluon Plasma ◽  
Gluon Plasma ◽  
Transport Processes ◽  
Dilepton Production ◽  
Low Mass

Dilepton production from a nonequilibrium quark-gluon plasma in ultrarelativistic nucleus-nucleus collisions

1991 ◽  
Vol 43 (9) ◽  
pp. 2871-2891 ◽  
Author(s):  
M. Asakawa ◽  
T. Matsui
Keyword(s):  
Quark Gluon Plasma ◽  
Gluon Plasma ◽  
Dilepton Production

scholarly journals The role of gluons in dilepton production from the quark–gluon plasma

2000 ◽  
Vol 671 (1-4) ◽  
pp. 567-582 ◽  
Author(s):  
Ziwei Lin ◽  
C.M. Ko
Keyword(s):  
Quark Gluon Plasma ◽  
Gluon Plasma ◽  
Dilepton Production

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.

Dilepton production in thermal-dependent baryonic quark–gluon plasma

2014 ◽  
Vol 92 (1) ◽  
pp. 31-35 ◽  
Author(s):  
S. Somorendro Singh ◽  
Yogesh Kumar
Keyword(s):  
Production Rate ◽  
Quark Gluon Plasma ◽  
Chemical Potential ◽  
Gluon Plasma ◽  
Mass Region ◽  
Dilepton Production ◽  
Production Rates ◽  
Baryonic Chemical Potential ◽  
Low Mass ◽  
Quark Mass Dependence

We evolute a fireball of quark–gluon plasma (QGP) at thermal-dependent chemical potential (TDCP) through a statistical model in the pionic medium. The evolution of the fireball is explained through the free energy created in the pionic medium. We study the dilepton production at TDCP from such a fireball of QGP and hadronic phase. In this model, we take a finite quark mass dependence on temperature and parametrization factor. The temperature and factor enhance in the growth of the droplet formation of quarks and gluons as well as in the dilepton production rates. The production rate shows dilepton spectrum in the low mass region of the lepton pair as 0–1.2 GeV and in the intermediate mass region of 1.0–4.0 GeV. The rate of production is observed to be a strong increasing function of the TDCP for quark and antiquark annihilation. We compare the result of dilepton production at this TDCP with the production rate of the recent dilepton productions at zero and finite baryonic chemical potential and found the result far ahead in the production rates of dilepton at TDCP.

scholarly journals Excited bottomonia in quark-gluon plasma from lattice QCD

2020 ◽  
Vol 800 ◽  
pp. 135119 ◽  
Author(s):  
Rasmus Larsen ◽  
Stefan Meinel ◽  
Swagato Mukherjee ◽  
Peter Petreczky
Keyword(s):  
Lattice Qcd ◽  
Quark Gluon Plasma ◽  
Gluon Plasma
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