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arXiv 1112.1963hep-thhep-phnucl-th
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AdS/CFT中Dirichlet条件下关联函数的时间奇异性

Time singularities of correlators from Dirichlet conditions in AdS/CFT

Johanna Erdmenger, Carlos Hoyos, Shu Lin

摘要:

在AdS/CFT中,我们建立了一个获得两点关联函数在不同时刻插入算子的导奇异性的一般过程。所得到的程序适用于算子对偶的一个标量场,满足Dirichlet边界条件的任意类时表面上的散装。我们确定了狄利克雷边界条件如何影响场论关联函数的奇异结构。新的奇点出现在由Dirichlet曲面和边界之间反弹的零测地线连接的边界点处。我们建议,它们的外观可以被解释为由于一个非本地的双迹变形的双场论,其中两个插入的运营商是分开的时间。本文提出的方法提供了一种技术工具,它可能被证明是有用的,鉴于描述全息热化在AdS空间中使用引力坍缩。

英文摘要:

Within AdS/CFT, we establish a general procedure for obtaining the leading singularity of two-point correlators involving operator insertions at different times. The procedure obtained is applied to operators dual to a scalar field which satisfies Dirichlet boundary conditions on an arbitrary time-like surface in the bulk. We determine how the Dirichlet boundary conditions influence the singularity structure of the field theory correlation functions. New singularities appear at boundary points connected by null geodesics bouncing between the Dirichlet surface and the boundary. We propose that their appearance can be interpreted as due to a non-local double trace deformation of the dual field theory, in which the two insertions of the operator are separated in time. The procedure developed in this paper provides a technical tool which may prove useful in view of describing holographic thermalization using gravitational collapse in AdS space.

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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