Journal
PHYSICS LETTERS B
Volume 763, Issue -, Pages 370-374Publisher
ELSEVIER
DOI: 10.1016/j.physletb.2016.10.045
Keywords
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Funding
- 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
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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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