论文标题
重离子碰撞中电磁场引起的电荷依赖性流动
Charge-dependent flow induced by electromagnetic fields in heavy ion collisions
论文作者
论文摘要
碰撞的重离子产生了极强的磁场和电场，从而显着影响了产生的夸克 - 胶原等离子体（QGP）的演变。这些领域的知识对于通过手性磁效应和相关异常引起的现象确定拓扑波动在QGP中的作用至关重要。在本次演讲中，我们描述了通过动态电磁学以扰动方式补充的流体动力学框架中电场和磁场中QGP演变的工作。在IEBE-Vishnu框架中描述了QGP流体的演变。我们发现，电磁诱导的电流导致电荷驱动流量$ΔV_1$和一个电荷-ODD $ΔV_3$流动，这两个流程在速度方面都是奇怪的。尽管这些电荷-ODD流量的预测幅度与RHIC和LHC的数据一致，但正面和负HADRON的流量之间预测的不对称性迹象与数据相反。
The colliding heavy ions create extremely strong magnetic and electric fields that significantly affect the evolution of the produced quark-gluon plasma (QGP). The knowledge of these fields is essential for establishing the role of topological fluctuations in the QGP through the chiral magnetic effect and related anomaly-induced phenomena. In this talk, we describe our work on the evolution of the QGP in electric and magnetic fields in the framework of hydrodynamics supplemented, in a perturbative fashion, by the dynamical electromagnetism. The evolution of the QGP fluid is described within the iEBE-VISHNU framework. We find that the electromagnetically induced currents result in a charge-odd directed flow $Δv_1$ and a charge-odd $Δv_3$ flow both of which are odd in rapidity. While the predicted magnitude of these charge-odd flows agrees with the data from RHIC and LHC, the sign of the predicted asymmetry between the flows of positive and negative hadrons is opposite to the data.
