Shear Viscosity to Entropy Density Ratio in Au＋Au Central Collisions

The shear viscosity （7） and entropy density （s） are studied for the central Au＋Au collisions with the help of a microscopic transport model, namely the isospin-dependent quantum molecular dynamic model （IQMD）. Employ the formula given in Ref. [1],η is calculated as a time dependent variable for diff...

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Bibliographic Details
Published inPlasma science & technology Vol. 14; no. 7; pp. 585 - 587
Main Author 周铖龙 马余刚 方德清
Format Journal Article
LanguageEnglish
Published 01.07.2012
Subjects
IQMD
剪切粘度
同位旋相关
密度比
熵密度
碰撞过程
输运模型
量子分子动力学模型
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Summary:The shear viscosity （7） and entropy density （s） are studied for the central Au＋Au collisions with the help of a microscopic transport model, namely the isospin-dependent quantum molecular dynamic model （IQMD）. Employ the formula given in Ref. [1],η is calculated as a time dependent variable for different incident energies from 40 MeV/u to 120 MeV/u and the energy dependence of η/s of nuclear matter in the most compressed stage in collision process is displayed.
Bibliography:ZHOU Chenglong, MA Yugang, FANG Deqing（1Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800 China 2Graduate School of Chinese Academy of Sciences, Beijing 100080, China）
shear viscosity, entropy density, heavy ion collision
34-1187/TL
The shear viscosity （7） and entropy density （s） are studied for the central Au＋Au collisions with the help of a microscopic transport model, namely the isospin-dependent quantum molecular dynamic model （IQMD）. Employ the formula given in Ref. [1],η is calculated as a time dependent variable for different incident energies from 40 MeV/u to 120 MeV/u and the energy dependence of η/s of nuclear matter in the most compressed stage in collision process is displayed.
ISSN:1009-0630
DOI:10.1088/1009-0630/14/7/04