A physical protocol for observers near the boundary to obtain bulk information in quantum gravity
A physical protocol for observers near the boundary to obtain bulk information in quantum gravity
复制标题
边界附近的观察者获取量子引力大量信息的物理协议
DOI：
10.21468/scipostphys.10.5.106
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发表时间：
2020
期刊：
影响因子：
5.5
通讯作者：
S. Raju
中科院分区：
文献类型：
--
作者：
C. Chowdhury;O. Papadoulaki;S. Raju
我们考虑了一组居住在全球ADS边界附近的观察者，他们只被允许使用简单的低能量单位行动，并在很小的时间间隔内进行测量。观察员不得离开近边界地区。我们描述了一种物理协议，该协议仍然允许这些观察者获得关于批量状态的详细信息。该方案利用了体激发态对度规的引力反作用，同时也依赖于真空的纠缠结构。对于低能态，我们展示了近边界观察者如何使用该协议来完全识别体态。我们解释了为什么协议在没有引力的情况下完全失败的理论，包括非引力规范理论。这为这样一种说法提供了微扰证据，即在低能引力理论中，全息照相的一个特征--关于大块的信息在边界附近也是可用的--已经可见。
We consider a set of observers who live near the boundary of global AdS, and are allowed to act only with simple low-energy unitaries and make measurements in a small interval of time. The observers are not allowed to leave the near-boundary region. We describe a physical protocol that nevertheless allows these observers to obtain detailed information about the bulk state. This protocol utilizes the leading gravitational back-reaction of a bulk excitation on the metric, and also relies on the entanglement-structure of the vacuum. For low-energy states, we show how the near-boundary observers can use this protocol to completely identify the bulk state. We explain why the protocol fails completely in theories without gravity, including non-gravitational gauge theories. This provides perturbative evidence for the claim that one of the signatures of holography - the fact that information about the bulk is also available near the boundary - is already visible in the low-energy theory of gravity.
影响因子：
5.4
作者：
Xi Dong;X. Qi;Shangnan Zhou;Zhenbin Yang
通讯作者：
Xi Dong;X. Qi;Shangnan Zhou;Zhenbin Yang
DOI：
--
发表时间：
2019
期刊：
and cosmology
影响因子：
--
作者：
Jacobson, T;Nguyen, P.
通讯作者：
Nguyen, P.
DOI：
10.1088/1751-8121/abafe4
发表时间：
2020
期刊：
Journal of Physics A: Mathematical and Theoretical
影响因子：
--
作者：
Das, Sumit R;Kaushal, Anurag;Mandal, Gautam;Trivedi, Sandip P
通讯作者：
Trivedi, Sandip P