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- W3100532893 abstract "We investigate Euclidean wormholes in Einstein gravity with a massless scalar field in de Sitter space. Euclidean wormholes are possible due to the analytic continuation of the time as well as complexification of fields, where we need to impose the classicality after the Wick-rotation to the Lorentzian signatures. For some parameters, wormholes are preferred than Hawking-Moss instantons, and hence wormholes can be more fundamental than Hawking-Moss type instantons. Euclidean wormholes can be interpreted in three ways: (1) classical big bounce, (2) either tunneling from a small to a large universe or a creation of a collapsing and an expanding universe from nothing, and (3) either a transition from a contracting to a bouncing phase or a creation of two expanding universes from nothing. These various interpretations shed some light on challenges of singularities. In addition, these will help to understand tensions between various kinds of quantum gravity theories." @default.
- W3100532893 created "2020-11-23" @default.
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- W3100532893 date "2017-07-03" @default.
- W3100532893 modified "2023-10-15" @default.
- W3100532893 title "Fuzzy Euclidean wormholes in de Sitter space" @default.
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- W3100532893 doi "https://doi.org/10.1088/1475-7516/2017/07/001" @default.
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