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Gauge/gravity duality, jets in strongly coupled plasma, and far-from-equilibrium dynamics in conformal field theories.

机译:量规/重力对偶,强耦合等离子体中的射流以及共形场理论中的远非平衡动力学。

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摘要

We study dynamics in conformal field theories with gravitational duals. Attention is focused on heavy and light quark jets as well as far-from-equilibrium dynamics. The stress-energy tensor of a heavy quark moving through a strongly coupled N = 4 supersymmetric Yang-Mills plasma is evaluated using gauge/gravity duality. The accuracy with which the resulting wake, in position space, is reproduced by hydrodynamics is examined. Remarkable agreement is found between hydrodynamics and the complete result down to distances less than 2/ T away from the quark. We also compute the penetration depth of a light quark moving through a N = 4 supersymmetric Yang-Mills plasma using a combination of analytic and numerical techniques. We find that the maximum distance a quark with energy E can travel through a plasma is given by Dxmax E= C/T E/Tl 1/3 with C ≈ 0.5. For the study of dynamics far-from-equilibrium, we consider the creation and evolution of boost invariant anisotropic, strongly coupled conformal plasma. In the dual gravitational description, this corresponds to horizon formation in a geometry driven to be anisotropic by a time-dependent change in boundary conditions.
机译:我们研究具有引力对偶的共形场理论中的动力学。人们将注意力集中在重夸克和轻夸克喷射以及远离平衡的动力学上。使用规范/重力对偶性评估通过强耦合N = 4超对称Yang-Mills等离子体移动的重夸克的应力能张量。通过流体力学检查了在位置空间中产生的尾流的准确性。流体动力学与从夸克到小于2 / T的距离之间的完整结果之间有着显着的一致性。我们还使用分析和数值技术相结合的方法计算了轻夸克穿过N = 4超对称Yang-Mills等离子体的穿透深度。我们发现,具有能量E的夸克可以通过等离子体传播的最大距离由Dxmax E = C / T E / Tl 1/3给出,其中C≈ 0.5。为了研究远离平衡的动力学,我们考虑了升压不变各向异性,强耦合共形等离子体的产生和演化。在双引力描述中,这对应于边界条件随时间变化而驱动各向异性的几何图形中的地平线形成。

著录项

  • 作者

    Chesler, Paul M.;

  • 作者单位

    University of Washington.;

  • 授予单位 University of Washington.;
  • 学科 Physics Theory.;Physics Elementary Particles and High Energy.
  • 学位 Ph.D.
  • 年度 2009
  • 页码 165 p.
  • 总页数 165
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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