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Open Inflation Without False Vacua

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arxiv hep-th/9802030 v1 pith:FUJY5NND submitted 1998-02-05 hep-th astro-phgr-qchep-ph

S.W. Hawking , Neil Turok This is my paper · ORCID
classification hep-thastro-phgr-qchep-ph
keywords inflationmodelsopenproposalanthropicapproxapproximationboundary
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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 $\Omega_0\approx 0.01$. This number may be increased in models with more fields or extra dimensions.

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Forward citations

Cited by 3 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Morse-Bott inequalities, Topology Change and Cobordisms to Nothing

    hep-th 2024-10 unverdicted novelty 6.0 of 10

    Morse-Bott inequalities yield homology bounds and topology-change counts for generic cobordisms to nothing in string theory compactifications.

  2. Inflation, Open Universes, and Dark Energy

    astro-ph.CO 2026-07 conditional novelty 5.0 of 10

    A slightly open universe with Ω_k ≈ 3×10^{-3} pulls n_s down to ~0.969, reconciling plateau inflation models with combined CMB and DESI data.

  3. Black Holes and Baryon Number Violation: Unveiling the Origins of Early Galaxies and the Low-Mass Gap

    hep-ph 2024-11 reject novelty 5.0 of 10

    The authors argue that near a black hole horizon the gravitational field flattens the Higgs potential, removing the sphaleron barrier, and that the resulting baryon generation can explain early massive galaxies and th...

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