论文标题
重离子碰撞中的涡度和自旋极化：运输模型
Vorticity and Spin Polarization in Heavy Ion Collisions: Transport Models
论文作者
论文摘要
重离子碰撞会在产生的热夸克 - 胶状物质中产生强烈的液体涡流，这又可能诱导可测量的Hadron的自旋极化。我们回顾了重离子与运输模型的重离子碰撞中涡度形成和自旋极化的最新进展。我们提出了非偏见和相对论流体动力学中流体涡度的介绍，并介绍了重离子碰撞中形成的涡度的各种特性。我们使用Wigner函数形式主义讨论了涡流中的自旋极化，在该函数中，我们为自旋极化提供了冻结公式。最后，我们简要概述了$λ$和$ \ \barλ$ hyperons的全球和本地旋转极化的最新理论结果。
Heavy ion collisions generate strong fluid vorticty in the produced hot quark-gluon matter which could in turn induce measurable spin polarization of hadrons. We review recent progress on the vorticity formation and spin polarization in heavy ion collisions with transport models. We present an introduction to the fluid vorticity in non-relativistic and relativistic hydrodynamics and address various properties of the vorticity formed in heavy ion collisions. We discuss the spin polarization in a vortical fluid using the Wigner function formalism in which we derive the freeze-out formula for the spin polarization. Finally we give a brief overview of recent theoretical results for both the global and local spin polarization of $Λ$ and $\barΛ$ hyperons.
