Prescaling and Far-from-Equilibrium Hydrodynamics in the Quark-Gluon Plasma.

Prescaling and Far-from-Equilibrium Hydrodynamics in the Quark-Gluon Plasma.
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夸克-胶子等离子体中的预标度和远离平衡的流体动力学。

DOI:
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发表时间:
2018
影响因子:
8.6
通讯作者:
J. Berges
J. Berges
中科院分区:
物理与天体物理1区
文献类型:
--
作者:
A. Mazeliauskas;J. Berges

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预标度是一种远离平衡的现象,它描述了在其标度指数的普适值实现之前,分布的普遍标度形式的迅速建立。我们考虑在足够高能的重离子碰撞中探索的夸克-胶子等离子体的时空演化的例子。通过求解具有弹性和非弹性过程的QCD动力学理论,我们证明了胶子和夸克的分布很快就适应了一个与初始条件细节和系统参数无关的自相似标度形式。然后,标度前区域的动力学被完全编码为几个随时间变化的标度指数,这些标度指数的缓慢演化导致远离平衡的流体动力学行为。
Prescaling is a far-from-equilibrium phenomenon which describes the rapid establishment of a universal scaling form of distributions much before the universal values of their scaling exponents are realized. We consider the example of the spatiotemporal evolution of the quark-gluon plasma explored in heavy-ion collisions at sufficiently high energies. Solving QCD kinetic theory with elastic and inelastic processes, we demonstrate that the gluon and quark distributions very quickly adapt a self-similar scaling form, which is independent of initial condition details and system parameters. The dynamics in the prescaling regime is then fully encoded in a few time-dependent scaling exponents, whose slow evolution gives rise to far-from-equilibrium hydrodynamic behavior.
DOI: 10.1016/j.nuclphysa.2014.08.103
发表时间: 2014
期刊: Nuclear Physics
影响因子: --
作者:
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通讯作者: Raju Venugopalan
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发表时间: 2014-06-05
期刊: PHYSICAL REVIEW D
影响因子: 5
作者:
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期刊: PHYSICAL REVIEW D
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发表时间: 2014-04-03
期刊: PHYSICAL REVIEW D
影响因子: 5
作者:
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