QCD thermodynamics and confinement from a dynamical quasiparticle point of view

2007/04/11 by W. Cassing · 2 citations
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #nucl-th

paper · pdf · doi:10.1016/j.nuclphysa.2007.04.015

published as Nucl.Phys.A791:365-381,2007 · 21 pages, 8 figures, submitted to Nucl. Phys. A

arxiv created 2007/04/11 · openalex publication_date 2007/04/30 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

In this study it is demonstrated that a simple picture of the QCD gluon liquid emerges in the dynamical quasiparticle model that specifies the active degrees of freedom in the time-like sector and yields a potential energy density in the space-like sector. By using the time-like gluon density (or scalar gluon density) as an independent degree of freedom - instead of the temperature T as a Lagrange parameter - variations of the potential energy density lead to effective mean-fields for time-like gluons and an effective gluon-gluon interaction strength at low density. The latter yields a simple dynamical picture for the gluon fusion to color neutral glueballs when approaching the phase boundary from a temperature higher than T_c and paves the way for an off-shell transport theoretical description of the parton dynamics.

Citations

• Toward a theory of binary bound states in the quark-gluon plasma
• Relativistic Hadron-Hadron Collisions in the Ultra-Relativistic Quantum Molecular Dynamics Model (UrQMD)
• Multiphase transport model for relativistic heavy ion collisions
• Quantum hadrodynamics

Cited by

• Dynamical quasiparticles properties and effective interactions in the sQGP
• Shear viscosity of the Quark–Gluon Plasma from a virial expansion