Bulk viscosity of anisotropically expanding hot QCD plasma
- Department of Theoretical Physics, Tata Institute of Fundamental Research, Homi Bhabha Road, Mumbai-400005 (India)
The bulk viscosity, {zeta} and its ratio with the shear viscosity, {zeta}/{eta} have been studied in an anisotropically expanding pure glue plasma in the presence of turbulent color fields. It has been shown that the anisotropy in the momentum distribution function of gluons, which has been determined from a linearized transport equation eventually leads to the bulk viscosity. For the isotropic (equilibrium) state, a recently proposed quasiparticle model of pure SU(3) lattice QCD equation of state has been employed where the interactions are encoded in the effective fugacity. It has been argued that the interactions present in the equation of state, significantly contribute to the bulk viscosity. Its ratio with the shear viscosity is significant even at 1.5T{sub c}. Thus, one needs to take in account the effects of the bulk viscosity while studying the hydrodynamic expansion of quark-gluon plasma in the Relativistic Heavy Ion Collider and the Large Hadron Collider.
- OSTI ID:
- 21608031
- Journal Information:
- Physical Review. D, Particles Fields, Vol. 84, Issue 9; Other Information: DOI: 10.1103/PhysRevD.84.094025; (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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ANISOTROPY
BROOKHAVEN RHIC
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DISTRIBUTION FUNCTIONS
EQUATIONS OF STATE
EQUILIBRIUM
EXPANSION
GLUONS
INTERACTIONS
LATTICE FIELD THEORY
QUANTUM CHROMODYNAMICS
QUARK MATTER
SU-3 GROUPS
TRANSPORT THEORY
VISCOSITY
ACCELERATORS
BOSONS
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CONSTRUCTIVE FIELD THEORY
CYCLIC ACCELERATORS
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FIELD THEORIES
FUNCTIONS
HEAVY ION ACCELERATORS
LIE GROUPS
MATHEMATICAL MODELS
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PARTICLE MODELS
QUANTUM FIELD THEORY
QUARK MODEL
STORAGE RINGS
SU GROUPS
SYMMETRY GROUPS
SYNCHROTRONS