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arXiv 1503.07111hep-th
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Renyi熵、解析自举法和三维高亏格量子引力

Renyi Entropies, the Analytic Bootstrap, and 3D Quantum Gravity at Higher Genus

Matthew Headrick, Alexander Maloney, Eric Perlmutter, Ida G. Zadeh

摘要:

我们计算了真空Virasoro表象对中心荷为$c>1$的任意CFT的亏格2配分函数的贡献。这是三维空间中的微扰纯引力配分函数。我们采用缝合结构,其中的配分函数表示为Virasoro真空后裔的球体四点函数的总和。为了这个目的,我们开发的技术,有效地计算关联函数的全纯算子,这是由交叉对称性确定的正是由有限数量的OPE系数,这是一个解析实现的共形引导。扩展的结果在$1/c$,对应于半经典体重力膨胀,我们发现,-不像在亏格1-结果不截断在有限的循环顺序。我们的结果也使我们能够扩展早期的工作多区间Renyi熵和分离退化极限的配分函数。

英文摘要:

We compute the contribution of the vacuum Virasoro representation to the genus-two partition function of an arbitrary CFT with central charge $c>1$. This is the perturbative pure gravity partition function in three dimensions. We employ a sewing construction, in which the partition function is expressed as a sum of sphere four-point functions of Virasoro vacuum descendants. For this purpose, we develop techniques to efficiently compute correlation functions of holomorphic operators, which by crossing symmetry are determined exactly by a finite number of OPE coefficients; this is an analytic implementation of the conformal bootstrap. Expanding the results in $1/c$, corresponding to the semiclassical bulk gravity expansion, we find that---unlike at genus one---the result does not truncate at finite loop order. Our results also allow us to extend earlier work on multiple-interval Renyi entropies and on the partition function in the separating degeneration limit.

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