Flow Vorticity in Peripheral High Energy Heavy Ion Collisions
Flow Vorticity in Peripheral High Energy Heavy Ion Collisions
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DOI：
10.1103/physrevc.87.034906
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发表时间：
2013-02
影响因子：
3.1
通讯作者：
L. Csernai;V. Magas;Dujuan Wang
中科院分区：
文献类型：
--
作者：
L. Csernai;V. Magas;Dujuan Wang
研究了外围相对论重离子反应反应平面中的涡度发展，其中初始状态具有很大的角动量。早期预测的旋转效应和开尔文亥姆霍兹不稳定性导致显着的初始涡度和环流。在低粘度夸克胶子等离子体中，即使由于爆炸性膨胀和耗散引起的阻尼降低了涡度和循环，这种涡度在系统冻结时仍然很重要。在反应平面中，涡量由初始角动量产生，并且比在横向平面中更强，在横向平面中，涡量仅由随机涨落引起。
Vorticity development is studied in the reaction plane of peripheral relativistic heavy-ion reactions where the initial state has substantial angular momentum. The earlier predicted rotation effect and Kelvin Helmholtz instability lead to significant initial vorticity and circulation. In low-viscosity quark gluon plasma this vorticity remains still significant at the time of freeze-out of the system, even if damping due to explosive expansion and dissipation decreases the vorticity and circulation. In the reaction plane the vorticity arises from the initial angular momentum, and it is stronger than in the transverse plane, where vorticity is caused by random fluctuations only.