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arXiv 1503.01977hep-phhep-thnucl-th
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增强不变非阿贝尔等离子体的热化

On thermalization of a boost-invariant non Abelian plasma

L. Bellantuono, P. Colangelo, F. De Fazio, F. Giannuzzi

摘要:

利用全息方法,我们进一步研究了一个升压不变的非阿贝尔等离子体的流体动力学制度的松弛采取了平衡。在对偶描述中,系统被边界源驱动而脱离平衡,边界源是边界度量的变形,如Chesler和Yaffe所提出的。通过分析爱因斯坦方程的相应解,研究了几种变形轮廓对体几何的影响。恢复的流体动力学制度的时间进行了研究:设置在边界淬火结束时的系统的有效温度为$T_{eff}(τ^*)=500$兆电子伏,流体动力学制度是经过一段时间后达到${\cal O}$(1 fm/c)。

英文摘要:

Using a holographic method, we further investigate the relaxation towards the hydrodynamic regime of a boost-invariant non-Abelian plasma taken out-of-equilibrium. In the dual description, the system is driven out-of-equilibrium by boundary sourcing, a deformation of the boundary metric, as proposed by Chesler and Yaffe. The effects of several deformation profiles on the bulk geometry are investigated by the analysis of the corresponding solutions of the Einstein equations. The time of restoration of the hydrodynamic regime is investigated: setting the effective temperature of the system at the end of the boundary quenching to $T_{eff}(τ^*)=500$ MeV, the hydrodynamic regime is reached after a lapse of time of ${\cal O}$(1 fm/c).

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