Bjorken Flow of the quark-gluon plasma and Gauge/Gravity Correspondence
Bjorken Flow of the quark-gluon plasma and Gauge/Gravity Correspondence
复制标题
夸克-胶子等离子体的比约肯流和规范/重力对应
DOI：
--
复制
发表时间：
2009
期刊：
影响因子：
--
通讯作者：
R. Peschanski
中科院分区：
文献类型：
--
作者：
R. Janik;R. Peschanski
贡献提出了一个简短的总结规范/重力的方法来研究流体动力学流的夸克胶子等离子体形成的重离子碰撞，在一个助推不变的设置（比约肯流）。考虑到超对称Yang-Mills理论的理想情况，AdS/CFT对应给出了规范/引力对偶的精确形式，强耦合膨胀等离子体的性质与5维黑洞的度规一一对应，视界在第5维移动，其变形与相关的爱因斯坦方程一致。最近研究的几个方面，这一框架的回顾和透视。与G.Beuf和M.Heller合作的关于早期向流体动力学区域扩展的新结果提供了关于强耦合下流体远离平衡行为以及热化和各向同性问题的新见解。
The contribution presents a brief summary of the Gauge/Gravity approach to the study of hydrodynamic flow of the quark-gluon plasma formed in heavy-ion collisions, in a boost-invariant setting (Bjorken flow). Considering the ideal case of a supersymmetric Yang-Mills theory for which the AdS/CFT correspondence gives a precise form of the Gauge/Gravity duality, the properties of the strongly coupled expanding plasma are put in one-to-one correspondence with the metric of a 5-dimensional black hole with the horizon moving away in the 5th dimension and its deformations consistent with the relevant Einstein equations. Several recently studied aspects of this framework are recalled and put in perspective. New results in collaboration with G.Beuf and M.Heller on the early time expansion towards the hydrodynamical regime are provided giving a new insight on the far-from-equilibrium behavior of the fluid at strong coupling and the thermalization and isotropization problems.