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arXiv 1503.02185hep-thhep-ph
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重离子碰撞全息shock waves模型中QGP时间的形成

QGP time formation in holographic shock waves model of heavy ion collisions

Irina Ya. Aref'eva

摘要:

本文估计了重离子碰撞中两个碰撞激波全息模型的热化时间。为了这个目的,我们模型的过程中的Vaidya度规与被困表面的位置定义的地平线。我们考虑两个自下而上的AdS/QCD模型,在碰撞冲击波的方法,多重性的依赖与RHIC和LHC结果兼容的能量。一个模型是自下而上的AdS/QCD约束模型,另一个模型与各向异性热化有关。我们估计热化时间,并表明,增加限制势的热化时间减少,以及各向异性加速热化。

英文摘要:

We estimate the thermalization time in two colliding shock waves holographic model of heavy-ion collisions. For this purpose we model the process by the Vaidya metric with a horizon defined by the trapped surface location. We consider two bottom-up AdS/QCD models that give, within the colliding shock waves approach, the dependence of multiplicity on the energy compatible with RHIC and LHC results. One model is a bottom-up AdS/QCD confining model and the other is related to an anisotropic thermalization. We estimate the thermalization time and show that increasing the confining potential decreases the thermalization time as well as an anisotropy accelerates the thermalization.

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