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arXiv · 1411.5409

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

C. L. Zhou·Y. G. Ma·D. Q. Fang·G. Q. Zhang·J. Xu·X. G. Cao·W. Q. Shen
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Abstract

The correlation between the elliptic flow $v_2$ scaled by the impact parameter $b$ and the shear viscosity $η$ as well as the specific viscosity $η/s$, 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 $v_{2}/b$ decreases almost linearly with increasing $η$, consistent with that observed in ultra-relativistic heavy-ion collisions. On the other hand, $v_{2}/b$ is found to increase with increasing $η/s$.

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C. L. Zhou, Y. G. Ma, D. Q. Fang, G. Q. Zhang, J. Xu, X. G. Cao, W. Q. Shen. 2014-11-20. Correlation between elliptic flow and shear viscosity in intermediate-energy heavy-ion collisions. https://doi.org/10.1103/physrevc.90.057601

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