论文标题
公制各向异性和非平衡吸引子扩展等离子体
Metric anisotropies and nonequilibrium attractor for expanding plasma
论文作者
论文摘要
我们考虑了Bianchi I型公制给出的各向异性时空中的无物和无质量颗粒系统的演变。我们专门针对轴对称情况，在弛豫时间近似中从玻尔兹曼方程中得出各向异性流体动力学的框架。我们考虑了轴对称的Kasner度量的情况，并研究了在近外和远程方面对新兴吸引子的方法。此外，通过放松卡斯纳对度量系数的条件，我们研究了扩展几何形状对远程平衡吸引子的影响，并讨论了其在相对论重离子碰撞的背景下的含义。
We consider the evolution of a system of chargeless and massless particles in an anisotropic space-time given by the Bianchi type I metric. Specializing to the axis-symmetric case, we derive the framework of anisotropic hydrodynamics from the Boltzmann equation in the relaxation-time approximation. We consider the case of the axis-symmetric Kasner metric and study the approach to the emergent attractor in near and far-off-equilibrium regimes. Further, by relaxing the Kasner conditions on metric coefficients, we study the effect of expansion geometries on the far-off-equilibrium attractor and discuss its implications in the context of relativistic heavy-ion collisions.
