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Damped Perturbations in the No-Boundary State
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Singular instantons in quantum cosmology have been discussed by Hawking and Turok [41], but it was argued in Ref. [42] that such instantons are not actually stationary points of the Euclidean action, since they fail to satisfy the equations of motion at the singular point.
“Singular instantons in quantum cosmology have been discussed by Hawking and Turok [41], but it was argued in Ref. [42] that such instantons are not actually stationary points of the Euclidean action, since they fail to satisfy the equations of motion at the singular point.”
From On Quantum Creation of a Toroidal Universe (2026) · cites this paper as [42]
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Experimental — accuracy not yet measuredRef. [42] points out that if such singular instantons were treated as valid stationary points, then it would be possible to construct a singular instanton which would lead to the rapid decay of flat space.
“Ref. [42] also points out that if such singular instantons were treated as valid stationary points, then it would be possible to construct a singular instanton which would lead to the rapid decay of flat space.”
From On Quantum Creation of a Toroidal Universe (2026) · cites this paper as [42]
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Hartle, J. B., & Hawking, S. W. (1983) · Physical Review D · doi:10.1103/physrevd.28.2960 · Cited by 3,027
Self-citationNo-Boundary Measure of the Universe
Hartle, J. B., Hawking, S. W., & Hertog, T. (2008) · Physical Review Letters · doi:10.1103/physrevlett.100.201301 · Cited by 157
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Cited by
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Euclidean Wormholes, Baby Universes, and Their Impact on Particle Physics and Cosmology
Hebecker, A., Mikhail, T., & Soler, P. (2018) · Frontiers in Astronomy and Space Sciences · doi:10.3389/fspas.2018.00035 · Cited by 136
String tension between de Sitter vacua and curvature corrections
Basile, I., & Platania, A. (2021) · Physical Review D · doi:10.1103/physrevd.104.l121901 · Cited by 31
Suppression of spacetime singularities in quantum gravity
Borissova, J. N. (2024) · Classical and Quantum Gravity · doi:10.1088/1361-6382/ad46c0 · Cited by 14
On Quantum Creation of a Toroidal Universe
Guth, A. H., & Vilenkin, A. (2026) · Fundamental Theories of Physics · doi:10.1007/978-3-032-15703-4_8 · Cited by 4
Metadata
- Authors
- Dorronsoro, J. D., Halliwell, J. J., Hartle, J. B., Hertog, T., Janssen, O., & Vreys, Y.
- Venue
- Physical Review Letters
- Publisher
- American Physical Society (APS)
- Published
- 2018-08-20
- Volume
- 121
- Issue
- 8
- ISSN
- 0031-9007
- 1079-7114
- Cited by
- 58
- References
- 2
- Language
- en
- Funders
- Fonds Wetenschappelijk Onderzoek (G092617N, G.0.E52.14N)
- KU Leuven (C16/16/005)
- H2020 European Research Council (ERC-2013-CoG 616732)
- James Arthur Fellowship
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