期刊
PHYSICS LETTERS B
卷 763, 期 -, 页码 370-374出版社
ELSEVIER
DOI: 10.1016/j.physletb.2016.10.045
关键词
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资金
- U.S. Department of Energy (DOE), Office of Science, Office of High Energy Physics [DE-AC02-05CH11231]
- National Science Foundation [PHY-1521446]
- MEXT [15H05895]
- Simons Heising Physics Fellowship Fund
- DOE NNSA Stewardship Science Graduate Fellowship
- Grants-in-Aid for Scientific Research [15H05895] Funding Source: KAKEN
- Division Of Physics
- Direct For Mathematical & Physical Scien [1521446] Funding Source: National Science Foundation
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. (C) 2016 The Authors. Published by Elsevier B. V.
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