论文标题
旋转Quark-Gluon等离子体的旋转与螺旋度平衡时间和拉格朗日
Spin versus Helicity Equilibration Times and Lagrangian for Strange Quarks in Rotating Quark-Gluon Plasma
论文作者
论文摘要
$λ$和$ \ \ \barλ$ Hyperons在相对论重离子对撞机（RHIC）的净极化的测量引起了人们对奇怪的夸克如何与重离子碰撞中产生的物质涡度的旋转如何对齐的极大兴趣。我们在流体元件的其余框架中计算了Lagrangian，其旋转的旋转，其角速度$ω$，包括光子和Gluon场。夸克与量规场之间还有一个额外的耦合，与$ω$成正比，但是该顶点不会改变夸克的旋转。我们还表明，与温度相比，与$ω$相比，平衡与涡度平行的旋转的时间相同。
Measurements of the net polarization of $Λ$ and $\barΛ$ hyperons at the Relativistic Heavy Ion Collider (RHIC) have stimulated much interest in how strange quarks might align their spin with the vorticity of the matter created in heavy ion collisions. We calculate the Lagrangian in the rest frame of a fluid element undergoing rotation with angular velocity $ω$ including photon and gluon fields. There is an additional coupling between the quarks and the gauge fields proportional to $ω$, but this vertex does not change the spin of the quarks. We also show that the times to equilibrate quark helicity and spin parallel to the vorticity are the same so long as $ω$ is small compared to the temperature.
