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The Real No-Boundary Wave Function in Lorentzian Quantum Cosmology

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arxiv 1705.05340 v2 pith:N66SAK4E submitted 2017-05-15 gr-qc hep-th

The Real No-Boundary Wave Function in Lorentzian Quantum Cosmology

Juan Diaz Dorronsoro , Jonathan J. Halliwell , James B. Hartle , Thomas Hertog , Oliver Janssen This is my paper
classification gr-qc hep-th
keywords functionwavelorentzianno-boundaryrealasymptoticallyclassicalcontour
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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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