Shear and bulk viscosities of the gluon plasma in a quasiparticle description

Journal Article · Mon Aug 15 00:00:00 EDT 2011 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.84.025201· OSTI ID:21596698

Bluhm, M ^[1]; Kaempfer, B ^[2]; Redlich, K ^[3]

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1. SUBATECH, UMR 6457, Universite de Nantes, Ecole des Mines de Nantes, IN2P3/CNRS, 4 rue Alfred Kastler, FR-44307 Nantes cedex 3 (France)
2. Institut fuer Strahlenphysik, Helmholtzzentrum Dresden Rossendorf, PF 510119, DE-01314 Dresden (Germany)
3. CERN, Physics Department, Theory Division, CH-1211 Geneva 23 (Switzerland)

Shear and bulk viscosities of deconfined gluonic matter are investigated within an effective kinetic theory by describing the strongly interacting medium phenomenologically in terms of quasiparticle excitations with medium-dependent self-energies. We show that the resulting transport coefficients reproduce the parametric dependencies on temperature and coupling obtained in perturbative QCD at large temperatures and small running coupling. The extrapolation into the nonperturbative regime results in a decreasing specific shear viscosity with decreasing temperature, exhibiting a minimum in the vicinity of the deconfinement transition, while the specific bulk viscosity is sizable in this region, falling off rapidly with increasing temperature. The temperature dependence of specific shear and bulk viscosities found within this quasiparticle description of the pure gluon plasma is in agreement with available lattice QCD results.

• OSTI ID: 21596698
• Journal Information: Physical Review. C, Nuclear Physics, Vol. 84, Issue 2; Other Information: DOI: 10.1103/PhysRevC.84.025201; (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
COUPLING
EXCITATION
EXTRAPOLATION
GLUONS
LATTICE FIELD THEORY
PLASMA
QUANTUM CHROMODYNAMICS
SELF-ENERGY
TEMPERATURE DEPENDENCE
BOSONS
CONSTRUCTIVE FIELD THEORY
ENERGY
ENERGY-LEVEL TRANSITIONS
FIELD THEORIES
MATHEMATICAL SOLUTIONS
NUMERICAL SOLUTION
QUANTUM FIELD THEORY