论文标题
建立流体力学在高能碰撞中的适用性范围
Establishing the Range of Applicability of Hydrodynamics in High-Energy Collisions
论文作者
论文摘要
我们模拟了基于在保形弛豫时间近似中的微观动力学描述的高能碰撞的时空动力学，以确定相对论粘性流体动力学中有效描述的适用性范围。我们发现，当平均逆雷诺数足够小并且适当地考虑了早期平衡阶段时，流体动力学提供了对集体流量的定量准确描述。我们进一步讨论了我们发现对质子质子，质子核和光核碰撞（质子核能中流体动力学的适用性）的影响。
We simulate the space-time dynamics of high-energy collisions based on a microscopic kinetic description in the conformal relaxation time approximation, in order to determine the range of applicability of an effective description in relativistic viscous hydrodynamics. We find that hydrodynamics provides a quantitatively accurate description of collective flow when the average inverse Reynolds number is sufficiently small and the early pre-equilibrium stage is properly accounted for. We further discuss the implications of our findings for the (in)applicability of hydrodynamics in proton-proton, proton-nucleus and light nucleus collisions.
