论文标题
在JT重力中剖析合奏
Dissecting the ensemble in JT gravity
论文作者
论文摘要
我们通过对几何形状进行求和来计算JT重力中的散装和边界相关因子。通过计算混乱量子系统相关器的合适合奏平均值来复制答案。然后，我们考虑在大空间分离处进行散装相关器，并发现半经典衰变最终使围绕某些非零答案的不稳定振荡让路。由于虫洞连接遥远的区域，因此没有簇分解。我们通过在重力理论中包含一组麸皮的数据来构建更多的JT重力版本对单个量子系统的双重版本。我们专注于涉及世界末端的本征态的批量描述，并解释了观察值如何由于与这些麸皮连接的几何形状引起的分解。
We calculate bulk and boundary correlators in JT gravity by summing over geometries. The answers are reproduced by computing suitable ensemble averages of correlators of chaotic quantum systems. We then consider bulk correlators at large spatial separations and find that semiclassical decay eventually makes way for erratic oscillations around some nonzero answer. There is no cluster decomposition because of wormholes connecting distant regions. We construct more microscopic versions of JT gravity which are dual to a single quantum system by including a set of branes in the gravitational theory the data of which describes the Hamiltonian of the dual system. We focus on the bulk description of eigenstates which involves end of the world branes and we explain how observables factorize due to geometries connecting to these branes.
