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arXiv 1607.02508hep-thgr-qc
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时空等于纠缠

Spacetime Equals Entanglement

Yasunori Nomura, Nico Salzetta, Fabio Sanches, Sean J. Weinberg

摘要:

我们研究了经典时空的希尔伯特空间结构,假设全息理论中的纠缠决定了半经典几何。我们表明,这个简单的假设有着深刻的含义,例如,一个经典时空的叠加可能导致另一个经典时空。尽管它的非传统性质,这幅画承认标准的解释叠加定义良好的半经典时空的限制,全息自由度的数量变得很大。我们用宇宙时空全息理论的模型来说明这些想法。

英文摘要:

We study the Hilbert space structure of classical spacetimes under the assumption that entanglement in holographic theories determines semiclassical geometry. We show that this simple assumption has profound implications; for example, a superposition of classical spacetimes may lead to another classical spacetime. Despite its unconventional nature, this picture admits the standard interpretation of superpositions of well-defined semiclassical spacetimes in the limit that the number of holographic degrees of freedom becomes large. We illustrate these ideas using a model for the holographic theory of cosmological spacetimes.

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