论文标题
高温QCD等离子体中的非平衡吸引子
Non-equilibrium attractor in high-temperature QCD plasmas
论文作者
论文摘要
我们在经历了一维Bjorken膨胀的弱耦合量规理论中建立了遥远的平衡吸引子的存在。我们证明，产生的远距离平衡进化对初始条件的某些特征不敏感，包括初始动量空间各向异性和初始占用率。我们发现，这种不敏感的延伸超出了能量量张量，直到一颗粒子分布函数的详细形式。基于我们的结果，我们评估了从吸引子沿吸引子张量的整个单粒子分布函数的不同程序，并讨论了对超浮动核碰撞现象学分析中使用的冻结程序的含义。
We establish the existence of a far-from-equilibrium attractor in weakly-coupled gauge theory undergoing one-dimensional Bjorken expansion. We demonstrate that the resulting far-from-equilibrium evolution is insensitive to certain features of the initial condition, including both the initial momentum-space anisotropy and initial occupancy. We find that this insensitivity extends beyond the energy-momentum tensor to the detailed form of the one-particle distribution function. Based on our results, we assess different procedures for reconstructing the full one-particle distribution function from the energy-momentum tensor along the attractor and discuss implications for the freeze-out procedure used in the phenomenological analysis of ultra-relativistic nuclear collisions.
