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arXiv 2404.02149hep-thgr-qcmath-phmath.MP
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源自三维引力的 Nambu-Goto 方程

Nambu-Goto equation from three-dimensional gravity

Avik Banerjee, Ayan Mukhopadhyay, Giuseppe Policastro

AI总结:

本文证明三维引力中沿张力弦粘合时空所得解与 Nambu-Goto 方程解对应,并将该结果应用于 AdS$_3$/CFT$_2$ 界面描述。

摘要:

我们证明,通过沿由一根张力弦构成的交界将两个相同时空副本粘合而得到的三维引力解,与同一时空中的 Nambu-Goto 方程解一一对应;除有限数量与世界面和时空等距相关的刚性形变外,这一对应成立。交界嵌入坐标平均值所满足的非线性 Nambu-Goto 方程,连同刚性形变以及由张力引起的修正,直接由交界条件产生。因此,等效原理以非平凡方式推广到弦。我们的结果在三维平直时空和 AdS 时空中均有效。在 AdS$_3$/CFT$_2$ 对应背景下,我们的设置可用于描述共形场论中的一类界面,其特征是界面处的相对时间重参数化;该重参数化编码了与体交界对应的 Nambu-Goto 方程解。

英文摘要:

We demonstrate that the solutions of three-dimensional gravity obtained by gluing two copies of a spacetime across a junction constituted of a tensile string are in one-to-one correspondence with the solutions of the Nambu-Goto equation in the same spacetime up to a finite number of rigid deformations related to worldsheet and spacetime isometries. The non-linear Nambu-Goto equation satisfied by the average of the embedding coordinates of the junction emerges directly from the junction conditions along with the rigid deformations and corrections due to the tension. Therefore, the equivalence principle generalizes non-trivially to the string. Our results are valid both in three-dimensional flat and AdS spacetimes. In the context of AdS$_3$/CFT$_2$ correspondence, our setup could be used to describe a class of interfaces in the conformal field theory featuring relative time reparametrization at the interface which encodes the solution of the Nambu-Goto equation corresponding to the bulk junction.

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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