论文标题
在空间均匀系统中的振荡的热化
Thermalization of gluons in spatially homogeneous systems
论文作者
论文摘要
我们使用扩散近似中的Boltzmann方程研究了在空间均匀系统中振荡的热化。对于最初的不足和人口过多的系统，获得了有关热化的完整图片。在最初人口不足的系统中，我们发现其软扇区经历了三个阶段：在实现完全热化之前，过热，冷却/过冷和再加热。在最初填充的系统中，我们发现其软扇形仅经历了两个阶段，以实现完全的热化：过热和冷却。由于多个弹性碰撞，动量拓宽一致地驱动了冷却阶段，这表现为一种非热缩放解决方案。
We investigate thermalization of gluons in spatially homogeneous systems using the Boltzmann equation in diffusion approximation. A complete picture on thermalization is obtained for both initially under- and over-populated systems. In an initially under-populated system, we find that its soft sector undergoes three stages: overheating, cooling/overcooling and reheating before full thermalization is achieved. In an initially over-populated system, we find that its soft sector only undergoes two stages towards full thermalization: overheating and cooling. The cooling stage is consistently driven by momentum broadening due to multiple elastic collisions, manifest as a non-thermal scaling solution.
