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arXiv 1911.03485hep-thcond-mat.str-elquant-ph
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非周期全息张量网络模型的中心荷

Central charges of aperiodic holographic tensor network models

Alexander Jahn, Zoltán Zimborás, Jens Eisert

摘要:

AdS/CFT对应的核心是反德西特(AdS)时空的曲率与其边界上对偶共形场论(CFT)的中心荷之间的精确关系。我们的工作表明,这样的关系也可以建立基于规则的体几何的AdS/CFT的张量网络模型,导致边界状态所表现出的最大中心荷的解析形式。我们确定了一类张量的基础上马约拉纳二聚体状态,饱和这些界限在大曲率的限制,同时也实现了完美和块完美的全息量子纠错码。此外,所得到的模型的重整化群的描述被证明是类似于强无序重整化群,从而给出了第一个例子,一个确切的量子纠错码,产生了一个很好理解的临界系统。这些系统表现出很大范围的分数中心荷,可通过选择块瓷砖。因此,我们的方法提供了一个精确的物理解释张量网络模型的规则双曲几何形状,并建立定量连接到广泛的现有模型。

英文摘要:

Central to the AdS/CFT correspondence is a precise relationship between the curvature of an anti-de Sitter (AdS) spacetime and the central charge of the dual conformal field theory (CFT) on its boundary. Our work shows that such a relationship can also be established for tensor network models of AdS/CFT based on regular bulk geometries, leading to an analytical form of the maximal central charges exhibited by the boundary states. We identify a class of tensors based on Majorana dimer states that saturate these bounds in the large curvature limit, while also realizing perfect and block-perfect holographic quantum error correcting codes. Furthermore, the renormalization group description of the resulting model is shown to be analogous to the strong disorder renormalization group, thus giving the first example of an exact quantum error correcting code that gives rise to a well-understood critical system. These systems exhibit a large range of fractional central charges, tunable by the choice of bulk tiling. Our approach thus provides a precise physical interpretation of tensor network models on regular hyperbolic geometries and establishes quantitative connections to a wide range of existing models.

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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