Shear viscosity to entropy density ratio in the Boltzmann-Uehling-Uhlenbeck model

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

DOI:https://doi.org/10.1103/PHYSREVC.84.024607· OSTI ID:21596671

Li, S X; Fang, D Q; Ma, Y G; Zhou, C L

The ratio of shear viscosity ({eta}) to entropy density (s) for an equilibrated system is investigated in intermediate-energy heavy-ion collisions below 100A MeV within the framework of the Boltzmann-Uehling-Uhlenbeck model. After the collision system almost reaches a local equilibration, the temperature, pressure and energy density are obtained from the phase-space information and {eta}/s is calculated using the Green-Kubo formulas. The results show that {eta}/s decreases with incident energy and tends toward a smaller value around 0.5, which is not so drastically different from the BNL Relativistic Heavy Ion Collider results in the present model.

• OSTI ID: 21596671
• Journal Information: Physical Review. C, Nuclear Physics, Vol. 84, Issue 2; Other Information: DOI: 10.1103/PhysRevC.84.024607; (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

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BNL
BROOKHAVEN RHIC
COLLISIONS
DENSITY
ENERGY DENSITY
ENTROPY
HEAVY ION REACTIONS
KUBO FORMULA
MEV RANGE 10-100
PHASE SPACE
VISCOSITY
ACCELERATORS
ENERGY RANGE
HEAVY ION ACCELERATORS
MATHEMATICAL SPACE
MEV RANGE
NATIONAL ORGANIZATIONS
NUCLEAR REACTIONS
PHYSICAL PROPERTIES
SPACE
STORAGE RINGS
THERMODYNAMIC PROPERTIES
US AEC
US DOE
US ERDA
US ORGANIZATIONS