Interplay of shear and bulk viscosity in generating flow in heavy-ion collisions
- Department of Physics, Ohio State University, Columbus, Ohio 43210 (United States)
We perform viscous hydrodynamic calculations in 2+1 dimensions to investigate the influence of bulk viscosity on the viscous suppression of elliptic flow in noncentral heavy-ion collisions at Relativistic Heavy Ion Collider energies. Bulk and shear viscous effects on the evolution of radial and elliptic flow are studied with different model assumptions for the transport coefficients. We find that the temperature dependence of the relaxation time for the bulk viscous pressure, especially its critical slowing-down near the quark-hadron phase transition at T{sub c}, partially offsets effects from the strong growth of the bulk viscosity itself near T{sub c} and that even small values of the specific shear viscosity eta/s of the fireball matter can be extracted without large uncertainties from poorly controlled bulk viscous effects.
- OSTI ID:
- 21386623
- Journal Information:
- Physical Review. C, Nuclear Physics, Vol. 81, Issue 2; Other Information: DOI: 10.1103/PhysRevC.81.024905; (c) 2010 The American Physical Society; ISSN 0556-2813
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BROOKHAVEN RHIC
COMPUTERIZED SIMULATION
EVOLUTION
HADRONS
HEAVY ION REACTIONS
HYDRODYNAMIC MODEL
PHASE TRANSFORMATIONS
QUARKS
RELAXATION TIME
SLOWING-DOWN
TEMPERATURE DEPENDENCE
THREE-DIMENSIONAL CALCULATIONS
VISCOSITY
ACCELERATORS
ELEMENTARY PARTICLES
FERMIONS
HEAVY ION ACCELERATORS
MATHEMATICAL MODELS
NUCLEAR REACTIONS
PARTICLE MODELS
SIMULATION
STATISTICAL MODELS
STORAGE RINGS
THERMODYNAMIC MODEL