Initial fluctuation effect on elliptic flow in Au+Au collision at 1 GeV/A  

作　　者：WANG Jia MA Yugang ZHANG Guoqiang FANG Deqing HAN Lixin SHEN Wenqing 

机构地区：[1]Shanghai Institute of Applied Physics,Chinese Academy of Sciences,Jiading campus [2]University of Chinese Academy of Sciences

出　　处：《Nuclear Science and Techniques》2013年第3期50-54,共5页核技术（英文）

基　　金：Supported by National Natural Science Foundation of China(Nos.11220101005,11035009,10979074 and 11205230);Major State Basic Research Development Program in China(No.2013CB834405)

摘　　要：How the initial fluctuation affects on the elliptic flow is investigated by investigating the rapidity, transverse 4-velocity, centrality dependencies of elliptic flow for Au+Au at 1 GeV/A with the help of an Isospin Quantum Molecular Dynamics (IQMD). In addition, we compare the flow calculated with respect to participant plane created by the initial geometry in coordinate space with the flow reconstructed by the experimental event-plane method, and compare the flow with the experimental data of the FOPI collaboration. It shows that there exists some discrepancy between the flows reconstructed by the above two methods.How the initial fluctuation affects on the elliptic flow is investigated by investigating the rapidity, transverse 4-velocity, centrality dependencies of elliptic flow for Au＋Au at 1 GeV/A with the help of an Isospin Quantum Molecular Dynamics （IQMD）. In addition, we compare the flow calculated with respect to participant plane created by the initial geometry in coordinate space with the flow reconstructed by the experimental event-plane method, and compare the flow with the experimental data of the FOPI collaboration. It shows that there exists some discrepancy between the flows reconstructed by the above two methods.

关 键 词：波动影响 椭圆流 伏特 电子 量子分子动力学 碰撞 流量计算 空间实验 

分 类 号：O571.4[理学—粒子物理与原子核物理]