Correlation between elliptic flow and shear viscosity in intermediate-energy heavy-ion collisions

2014/11/18 by C. L. Zhou, Y. G. Ma, Y. G. +7 · 16 citations
Mathematics · Physics and Astronomy · #Composite material #Correlation #Elliptic flow #Flow (mathematics) #Geometry #Heavy ion #High-Energy Particle Collisions Research #Ion #Materials science #Mathematics #Mechanics #Nuclear physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Quantum mechanics #Shear (geology) #Shear viscosity #Thermodynamics #Viscosity #nucl-th

paper · pdf · doi:10.1103/physrevc.90.057601

published in Physical Review C 90(5) (American Institute of Physics) · 4 pages, 4 figures

openalex publication_date 2014/11/18 · arxiv created 2014/11/20 · arxiv updated 2014/11/21 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

The correlation between the elliptic flow v₂ scaled by the impact parameter b and the shear viscosity \ensuremathη as well as the specific viscosity \ensuremathη/s, defined as the ratio of the shear viscosity to the entropy density s, is investigated for the first time in intermediate-energy heavy-ion collisions based on an isospin-dependent quantum molecular dynamic model. The elliptic flow is calculated at balance energies to exclude the geometric influence such as the blocking effect from the spectators. Our study shows that v₂/b decreases almost linearly with increasing \ensuremathη, consistent with that observed in ultrarelativistic heavy-ion collisions. On the other hand, v₂/b is found to increase with increasing \ensuremathη/s.

Citations

• Viscosity Information from Relativistic Nuclear Collisions: How Perfect is the Fluid Observed at RHIC?
• Shear viscosity to entropy density ratio in the Boltzmann-Uehling-Uhlenbeck model
• Critical behavior in light nuclear systems: Experimental aspects
• Correlation between balance energy and transition energy for symmetric colliding nuclei
• Viscosity in Strongly Interacting Quantum Field Theories from Black Hole Physics
• Nuclear multifragmentation and phase transition for hot nuclei
• Experimental and theoretical challenges in the search for the quark–gluon plasma: The STAR Collaboration's critical assessment of the evidence from RHIC collisions

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