Journal
PHYSICAL REVIEW D
Volume 96, Issue 4, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.96.043505
Keywords
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Funding
- National Science Foundation of Belgium (FWO) [G092617N, G.0.E52.14N]
- KU Leuven [C16/16/005]
- European Research Council [ERC-2013-CoG 616732 HoloQosmos]
- James Arthur Fellowship
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It is shown that the standard no-boundary wave function has a natural expression in terms of a Lorentzian path integral with its contour defined by Picard-Lefschetz theory. The wave function is real, satisfies the Wheeler-DeWitt equation and predicts an ensemble of asymptotically classical, inflationary universes with nearly-Gaussian fluctuations and with a smooth semiclassical origin.
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