Comments on quantum gravity and entanglement
Comments on quantum gravity and entanglement
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发表时间：
2009-07
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通讯作者：
M. Raamsdonk
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作者：
M. Raamsdonk
在这篇文章中，我们试图利用已知的量规论/引力对偶的例子，对量子引力的非摄动描述结构提供一些见解。我们认为，在熟悉的例子中，时空的量子描述可以与流形结构相关联，其中特定的时空斑块与特定量子系统中的状态或密度矩阵相关联。我们认为微观自由度之间的量子纠缠在从非摄动自由度产生对偶时空中起着至关重要的作用。特别是，至少在某些情况下，经典连接的时空可以被理解为不连接时空的特定量子叠加。
In this note, we attempt to provide some insights into the structure of nonperturbative descriptions of quantum gravity using known examples of gaugetheory / gravity duality. We argue that in familiar examples, a quantum description of spacetime can be associated with a manifold-like structure in which particular patches of spacetime are associated with states or density matrices in specific quantum systems. We argue that quantum entanglement between microscopic degrees of freedom plays an essential role in the emergence of a dual spacetime from the nonperturbative degrees of freedom. In particular, in at least some cases, classically connected spacetimes may be understood as particular quantum superpositions of disconnected spacetimes.