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arXiv 1507.02548hep-thgr-qchep-phnucl-th
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全息平面激波碰撞中的普适流体动力学流动

Universal hydrodynamic flow in holographic planar shock collisions

Paul M. Chesler, Niki Kilbertus, Wilke van der Schee

摘要:

我们研究了平面激波在AdS $_5$中的碰撞随激波剖面的变化。在双场论中,激波描述了能量的平面片,其碰撞导致形成等离子体,该等离子体在后期表现为流体动力学。我们发现光锥附近的碰撞后应力张量表现出瞬态的非普适行为,这取决于激波宽度和激波轮廓的精确函数形式。然而,在很大范围的冲击宽度,包括那些产生定性不同的行为附近的未来光锥,并为不同的冲击剖面,我们发现在随后的流体动力学演化的普遍行为。此外,我们计算产生的粒子的快度分布,并发现它是很好地描述了高斯。

英文摘要:

We study the collision of planar shock waves in AdS$_5$ as a function of shock profile. In the dual field theory the shock waves describe planar sheets of energy whose collision results in the formation of a plasma which behaves hydrodynamically at late times. We find that the post-collision stress tensor near the light cone exhibits transient non-universal behavior which depends on both the shock width and the precise functional form of the shock profile. However, over a large range of shock widths, including those which yield qualitative different behavior near the future light cone, and for different shock profiles, we find universal behavior in the subsequent hydrodynamic evolution. Additionally, we compute the rapidity distribution of produced particles and find it to be well described by a Gaussian.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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