arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2001.01371nucl-thhep-phnucl-ex
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低能重离子碰撞中的涡旋

Vorticity in low-energy heavy-ion collisions

Xian-Gai Deng, Xu-Guang Huang, Yu-Gang Ma, Song Zhang

摘要:

利用超相对论量子分子动力学(UrQMD)模型研究了低能重离子碰撞中的运动学涡旋和热涡旋。我们探讨了它们的时间演化和空间分布。我们发现,初始涡度有一个非单调的依赖于碰撞能量$\sqrt{s_{\rm NN}}$:作为$\sqrt{s_{\rm NN}}$增长的涡度首先急剧增加,然后下降的转折点周围的$\sqrt{s_{\rm NN}}\sim 3-5$ GeV取决于中心。

英文摘要:

We study the kinematic and thermal vorticities in low-energy heavy-ion collisions by using the Ultra-relativistic Quantum Molecular Dynamics (UrQMD) model. We explore their time evolution and spatial distribution. We find that the initial vorticities have a non-monotonic dependence on the collision energy $\sqrt{s_{\rm NN}}$: as $\sqrt{s_{\rm NN}}$ grows the vorticities first increase steeply and then decrease with the turning point around $\sqrt{s_{\rm NN}}\sim 3-5$ GeV depending on the centrality.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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