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arXiv 0709.1089hep-thhep-phnucl-th
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规范弦对偶中扩散尾流的普适性

Universality of the diffusion wake in the gauge-string duality

Steven S. Gubser, Amos Yarom

摘要:

当粒子在流体中运动时,它可能在后面产生层流尾流,在规范弦对偶中,我们证明了这样的扩散尾流是由重夸克在热等离子体中运动产生的,并且当与等离子体对夸克施加的总阻力相比时,它具有普适的强度。普适性扩展到所有渐近反德西特超引力结构与任意标量物质。我们讨论了这些结果如何与线性化流体动力学近似相联系,以及它们如何影响我们对重离子碰撞中双强子碰撞子的理解。

英文摘要:

As a particle moves through a fluid, it may generate a laminar wake behind it. In the gauge-string duality, we show that such a diffusion wake is created by a heavy quark moving through a thermal plasma and that it has a universal strength when compared to the total drag force exerted on the quark by the plasma. The universality extends over all asymptotically anti-de Sitter supergravity constructions with arbitrary scalar matter. We discuss how these results relate to the linearized hydrodynamic approximation and how they bear on our understanding of di-hadron correlators in heavy ion collisions.

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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