论文标题
将远程平衡流体动力学连接到重新召集的传输系数和吸引子
Connecting far-from-equilibrium hydrodynamics to resummed transport coefficients and attractors
论文作者
论文摘要
我们研究了在重型离子碰撞中形成的夸克 - 糖浆血浆模拟中是否存在流体动力吸引子。我们认为，解决相对论粘性流体方程的拉格朗日方案对于表征重离子碰撞中吸引子的特性特别有用。以色列 - 斯图尔特理论中显示了初步结果，以支持这种主张。我们还讨论了如何在以色列 - 斯图尔特理论中执行慢速膨胀，这自然会导致定义重新定义的剪切粘度系数，该系数取决于流体动力场的梯度。
We investigate whether hydrodynamic attractors are present in simulations of the quark-gluon plasma formed in heavy-ion collisions. We argue that Lagrangian schemes to solve the relativistic viscous fluid equations can be particularly useful to characterize the properties of attractors in heavy ion collisions. Preliminary results are shown in Israel-Stewart theory to support such a claim. We also discuss how to perform the slow-roll expansion in Israel-Stewart theory undergoing a general flow, which naturally leads to the definition of a resummed shear viscosity coefficient that depends on the gradients of the hydrodynamic fields.
