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首页> 外文期刊>Nuclear Physics, A: Journal Devoted to the Experimental Study of the Fundamental Constituents of Matter and Their Actions >From color glass condensate to quark-gluon plasma through the event horizon
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From color glass condensate to quark-gluon plasma through the event horizon

机译：从彩色玻璃冷凝物到整个事件视域中的夸克-胶子等离子体

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We propose a new thermalization scenario for heavy ion collisions which at sufficiently high energies implies the phase transition to the quark-gluon plasma. The key ingredient of our approach is the Hawking-Unruh effect: an observer moving with an acceleration a experiences the influence of a thermal bath with an effective temperature T = α/2π, similar to the one present in the vicinity of a black hole horizon. For electric charges moving in external electromagnetic fields of realistic strength, the resulting temperature appears too small to be detected. However for partons in strong color fields the effect should be observable: in the color glass condensate picture, the strength of the color-electric field is E ∼ Q(s/2)(g) (Q(s) is the saturation scale, and g is the strong coupling), the typical acceleration is a ∼ Qs, and the heat bath temperature is T = Qs /2π ∼ 200 MeV. In nuclear collisions at sufficiently high energies the effect can induce a rapid thermalization over the time period of τ ≃ 2π/Q(s) ≃ 1 fm accompanied by phase transitions. We consider a specific example of chiral symmetry restoration induced by a rapid deceleration of the colliding nuclei. We argue that parton saturation in the initial nuclear wave functions is a necessary precondition for the formation of quark-gluon plasma. We discuss the implications of our "black hole thermalization" scenario for various observables in relativistic heavy ion collisions. © 2005 Elsevier B.V. All rights reserved.
机译：我们针对重离子碰撞提出了一种新的热化方案，该方案在足够高的能量下会暗示到夸克-胶子等离子体的相变。我们方法的关键要素是霍金-安鲁（Hawking-Unruh）效应：观察者以加速a的速度运动时，会受到有效温度T =α/2π的热浴的影响，类似于黑洞视界附近的热浴。 。对于在真实强度的外部电磁场中移动的电荷，所产生的温度似乎太小而无法检测。但是对于强色场中的部分，效果应该是可以观察到的：在彩色玻璃凝结图像中，色电场的强度为E＆SIM; Q（s / 2）（g）（Q（s）是饱和度，而g是强耦合），典型加速度是＆SIM; Qs，并且热浴温度为T ＝ Qs /2π。 200 MeV。在足够高的能量下发生核碰撞时，该效应会在τ＆SIME的时间段内引起快速热化。 2π/ Q（s）和SIME; 1 fm伴有相变。我们考虑由碰撞核的快速减速引起的手性对称性恢复的一个具体例子。我们认为，初始核波函数中的帕顿饱和度是形成夸克-胶子等离子体的必要先决条件。我们讨论了相对论重离子碰撞中各种可观察物的“黑洞热化”场景的含义。 ＆复制; 2005 Elsevier B.V.保留所有权利。

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