论文标题

弱耦合QCD等离子体的平衡

Equilibration of weakly coupled QCD plasmas

论文作者

Du, Xiaojian, Schlichting, Sören

论文摘要

我们采用非平衡量子染色体动力学(QCD)动力学描述来研究弱耦合时夸克 - 胶原等离子体(QGP)的动力学和化学平衡。根据我们的数值框架,该框架明确包括涉及轻度自由度的所有领先顺序过程,我们研究了均质和各向同性等离子体的热效过程远面平衡,并确定动力学和化学平衡的相关时间尺度。我们进一步模拟了在零和非零密度的超偏二离子碰撞中产生的纵​​向扩展的平衡前等离子体,并研究了其显微镜和宏观进化,朝平衡。

We employ a non-equilibrium Quantum Chromodynamics (QCD) kinetic description to study the kinetic and chemical equilibration of the Quark-Gluon Plasma (QGP) at weak coupling. Based on our numerical framework, which explicitly includes all leading order processes involving light flavor degrees of freedom, we investigate the thermalization process of homogeneous and isotropic plasmas far-from equilibrium and determine the relevant time scales for kinetic and chemical equilibration. We further simulate the longitudinally expanding pre-equilibrium plasma created in ultrarelativistic heavy-ion collisions at zero and non-zero density of the conserved charges and study its microscopic and macroscopic evolution towards equilibrium.

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