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arXiv · hep-th/9802030

Open Inflation Without False Vacua

S. W. Hawking·Neil Turok
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Abstract

We show that within the framework of a definite proposal for the initial conditions for the universe, the Hartle-Hawking `no boundary' proposal, open inflation is generic and does not require any special properties of the inflaton potential. In the simplest inflationary models, the semiclassical approximation to the Euclidean path integral and a minimal anthropic condition lead to $Ω_0\approx 0.01$. This number may be increased in models with more fields or extra dimensions.

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S. W. Hawking, Neil Turok. 1998-02-05. Open Inflation Without False Vacua. https://doi.org/10.1016/s0370-2693(98)00234-2

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