论文标题
基于轴向涡旋效应的重离子碰撞中的全球极化
Global polarization in heavy-ion collisions based on axial vortical effect
论文作者
论文摘要
$λ$和$ \barλ$的全局极化是根据轴向涡旋效应（AVE）计算的。模拟在三流体动力学的模型中进行。具有解元过渡的状态方程将与$λ$和$ \barλ$极化的星数据达成了良好的协议，尤其是$λ$ - $ \barλ$分裂。抑制数据繁殖所需的重力 - 异常贡献与QCD晶格模拟的预测一致。在较低的碰撞能量下，在即将进行的实验中的全局极化进行了预测。这些即将到来的数据将为极化的AVE和热力学机制提供关键测试。
Global polarization of $Λ$ and $\barΛ$ is calculated based on the axial vortical effect (AVE). Simulations are performed within the model of the three-fluid dynamics. Equations of state with the deconfinement transition result in a good agreement with STAR data for both $Λ$ and $\barΛ$ polarization, in particular, with the $Λ$-$\barΛ$ splitting. Suppression of the gravitational-anomaly contribution required for the data reproduction is in agreement with predictions of the QCD lattice simulations. Predictions for the global polarization in forthcoming experiments at lower collision energies are made. These forthcoming data will provide a critical test for the AVE and thermodynamic mechanisms of the polarization.
