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arXiv 1309.7852hep-th
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极值BTZ的纠缠熵

Entanglement Entropy of Extremal BTZ

Pawel Caputa, Vishnu Jejjala, Hesam Soltanpanahi

摘要:

本文以纠缠熵为工具,研究了与极值BTZ黑洞对偶的CFTs的普适性质。我们证明了计算的纠缠熵在极端BTZ的边界和极端BTZ的近视界极限的边界是完全一致的,并具有适当的形式,只有手征部分激发和反手征在基态的二维CFT。进一步分析了纠缠熵的普适极限,得到了大纠缠间隔下热熵的正确值和小纠缠间隔下类第一定律关系式.

英文摘要:

In this note, we use entanglement entropy as a tool to explore the universal properties of CFTs dual to extremal BTZ black holes. We demonstrate that the entanglement entropies computed in the CFTs at the boundary of the extremal BTZ and the boundary of the near-horizon limit of the extremal BTZ are in perfect agreement and have the form appropriate to a two-dimensional CFT with only the chiral part excited and the anti-chiral in the ground state. Furthermore, we analyze the universal limits of the entanglement entropy and recover the correct value of the thermal entropy for large entangling intervals and the first-law like relation for the small interval.

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