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arXiv 1804.00441hep-thgr-qc
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大$c$极限下MERA张量网络的量子比特线程

Quantum bit threads of MERA tensor network in large $c$ limit

Chong-Bin Chen, Fu-Wen Shu, Meng-He Wu

摘要:

Ryu-Takayanagi(RT)公式是当前规范-引力对偶理论和几何涌现现象中的一个重要概念。最近重新解释这个公式的一组“位线程”是一个有趣的努力,在理解全息。在本文中,我们研究了基于张量网络的比特线的量子推广,特别是在多尺度纠缠重整化分析(MERA)中。我们证明,在大的$c$限制,等距的MERA可以被视为“源”(或“汇”)的信息流,这广泛地修改了原来的图片的位线程通过引入一个新的变量$ρ$:密度的等距。在这个信息流的修正图中,等距可以被看作是信息流的生成器。在这个新的图像中还得到了纠缠熵的强次可加性和相关性质。大的$c$极限意味着经典引力可以从信息流中显现出来。

英文摘要:

The Ryu-Takayanagi (RT) formula is a crucial concept in current theory of gauge-gravity duality and emergent phenomena of geometry. Recent reinterpretation of this formula in terms of a set of "bit threads" is an interesting effort in understanding holography. In this paper, we investigate a quantum generalization of the "bit threads" based on tensor network, with particular interests in the multi-scale entanglement renormalization ansatz (MERA). We demonstrate that, in the large $c$ limit, isometries of the MERA can be regarded as "sources" (or "sinks") of the information flow, which extensively modifies the original picture of the bit threads by introducing a new variable $ρ$: density of the isometries. In this modified picture of information flow, the isometries can be viewed as generators of the flow. The strong subadditivity and related properties of the entanglement entropy are also obtained in this new picture. The large $c$ limit implies the classical gravity can be emerged from the information flow.

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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