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arXiv 2107.07516hep-thgr-qc
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自举量子极值曲面I:面积算子

Bootstrapping Quantum Extremal Surfaces I: The Area Operator

Alexandre Belin, Sean Colin-Ellerin

摘要:

量子极值曲面是联系量子信息理论和量子引力的核心,在信息佯谬的最新进展中发挥了突出的作用。我们发起了一个计划,系统地将这些表面的微观数据的双共形场论,即当地运营商的标度尺寸和他们的OPE系数。我们考虑用单迹算符作用于真空所得到的CFT态,它是体理论中单粒子态的对偶。针对AdS $_3$ /CFT $_2$,在量子极值变得重要的大$c$展开下,计算了CFT纠缠熵到二阶,并将其与体面积算符的期望值进行匹配.我们表明,这个顺序,Virasoro身份块只贡献于区域运营商。

英文摘要:

Quantum extremal surfaces are central to the connection between quantum information theory and quantum gravity and they have played a prominent role in the recent progress on the information paradox. We initiate a program to systematically link these surfaces to the microscopic data of the dual conformal field theory, namely the scaling dimensions of local operators and their OPE coefficients. We consider CFT states obtained by acting on the vacuum with single-trace operators, which are dual to one-particle states of the bulk theory. Focusing on AdS$_3$/CFT$_2$, we compute the CFT entanglement entropy to second order in the large $c$ expansion where quantum extremality becomes important and match it to the expectation value of the bulk area operator. We show that to this order, the Virasoro identity block contributes solely to the area operator.

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