论文标题
夸克旋转 - 热涡度比对和lambda，抗lambda在重离子碰撞中
Quark spin - thermal vorticity alignment and the Lambda, anti-Lambda polarization in heavy-ion collisions
论文作者
论文摘要
有人提出，在重离子碰撞中观察到的$λ$和$ \覆盖的λ$极化是由于夸克旋转和热涡度之间的相互作用所致。在这项工作中，考虑到有限质量的夸克，在有限温度和重骨化学势下发生这种比对所需的放松时间的计算。通过有效的顶点对相互作用进行建模后，进行计算，该顶点将涡旋介质内的热胶结和夸克融合在一起。我们表明夸克质量的效果是减少与无质量夸克案例相比的放松时间。出现了夸克/古夸克的固有全球两极分化，这被证明与$λ$/$ \barλ$偏振相关。
It has been proposed that the $Λ$ and $\overlineΛ$ polarizations observed in heavy-ion collisions are due to the interaction between quark spin and thermal vorticity. In this work we report on a computation of the relaxation time required for this alignment to occur at finite temperature and baryon chemical potential, considering quarks with a finite mass. The calculation is performed after modelling the interaction by means of an effective vertex which couples the thermal gluons and quarks within the vortical medium. We show that the effect of the quark mass is to reduce the relaxation time as compared to the massless quark case. An intrinsic global polarization of quarks/antiquarks emerges which is shown to be linked with the $Λ$/$\barΛ$ polarization.
