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The Oklo bound on the time variation of the fine-structure constant revisited
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“Damour and Dyson (1996), Fujii et al. (2000) also assumed a Maxwell distribution but let the moderator temperature vary so that they deduce an effective cross-section rðR r ; TÞ.They respectively restricted the temperature range to 180 C”
From Fundamental constants: from measurement to the universe, a window on gravitation and cosmology (2025) · cites this paper as Damour and Dyson (1996)
In the citing paper
“and (Gould et al. 2006)”
From Fundamental constants: from measurement to the universe, a window on gravitation and cosmology (2025) · cites this paper as Damour and Dyson (1996)
In the citing paper
“In particular this analysis (Damour and Dyson 1996) showed that the Bethe-Weiza ¨cker formula overestimates by about a factor the 2 the a EM -sensitivity to the resonance energy.”
From Fundamental constants: from measurement to the universe, a window on gravitation and cosmology (2025) · cites this paper as Damour and Dyson (1996)
In the citing paper
“It follows from this analysis that a EM DE r Da EM ' À1:1 MeV:ð164Þ”
From Fundamental constants: from measurement to the universe, a window on gravitation and cosmology (2025) · cites this paper as Damour and Dyson (1996)
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“The local methods include geophysical analyses of samples from the natural reactor in Oklo (Damour & Dyson 1996; Fujii et al. 2000), meteorites (Olive et al. 2004), and laboratory measurements of rates of atomics clocks (Bize et al. 2003; Fischer et al. 2004; Peik et al. 2004; Prestage et al. 1995; Sortais et al. 2000…”
MethodCompeting bounds on the present-day time variation of fundamental constants
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“In fact, since Paul Dirac [1,2] suggested in 1937 the “Large Numbers Hypothesis” that some constants of Nature could vary in space and time, the topic has remained a subject of fascination which has motivated numerous theoretical and experimental researches [3,4].”
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INVESTIGATION OF THE FUNDAMENTAL CONSTANTS STABILITY BASED ON THE REACTOR OKLO BURN-UP ANALYSIS
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“Later Damur and Dyson [9] for Zones 2 and 5 and also Fujii [10] for Zone 10 of reactor Oklo made more realistic analysis of the possible shift of fundamental constants during the last 2 · 10(9) years based on the isotope concentrations in the rock samples of Oklo core.”
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“Data from the Oklo natural fission reactor (Damour & Dyson 1996; Fujii et al. 2000) and half-lives of long lived β decayers (Olive et al. 2004) allow to constrain the variation of fundamental constants at z ≃ 1.”
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“These last include geophysical methods such as the natural nuclear reactor, which operated about 1.8 × 109 years ago in Oklo, Gabon (Damour & Dyson 1996; Petrov et al. 2006; Gould et al. 2006), the analysis of natural long-lived β decayers in geological minerals and meteorites (Olive et al. 2004), and laboratory measu…”
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“This concept has been applied to estimate cumulative fission yields for the Oklo natural fission reactor in West Africa [13, 14], where perturbations as high as 7.”
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“…constants, such as the atomic clocks (Bize et al. 2003; Fischer et al. 2004; Peik et al. 2004; Prestage et al. 1995; Sortais et al. 2000; Marion et al. 2003), the Oklo natural fission reactor (Damour & Dyson 1996; Fujii et al. 2000) and the analysis of the spectra of quasar absorption systems.”
BackgroundSpatial variation of fundamental constants: testing models with thermonuclear supernovae
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“There is, however, a contradiction with an upper limit to the change in a derived from the natural reactor at Oklo (Damour & Dyson 1996), if the change is assumed to be linear with time.”
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“…Investigador Cient́ıfico y Tecnológico, CONICET geophysical methods such as the natural nuclear reactor that operated about 1.8 109 years ago in Oklo, Gabon (Damour & Dyson 1996; Fujii et al. 2000), the analysis of natural long-lived β decayers in geological minerals and meteorites (Olive et al.…”
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“The latter ones include geophysical methods such as the natural nuclear reactor that operated about 1.8 × 109 years ago in Oklo, Gabon (Damour & Dyson 1996; Petrov et al. 2006; Gould et al. 2006), the analysis of natural long-lived β decayers in geological minerals and meteorites (Olive et al. 2004) and laboratory mea…”
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Metric Theories of Gravity and Their Post-Newtonian Limits
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Metadata
- Authors
- Damour, T., & Dyson, F.
- Affiliations
- Centre National de la Recherche Scientifique (FR)
- Princeton University (US)
- ORCID
- Damour, Thibault
- Venue
- Nuclear Physics B
- Publisher
- Elsevier BV
- Published
- 1996-11
- Volume
- 480
- Issue
- 1-2
- Pages
- 37-54
- ISSN
- 0550-3213 (ISSN-L)
- OpenAlex
- W2074946325
- Cited by
- 374
- References
- 33
- Citations by year
- 2026: 2 · 2025: 6 · 2024: 7 · 2023: 5 · 2022: 4 · 2021: 6 · 2020: 9 · 2019: 7 · 2018: 20 · 2017: 5 · 2016: 7 · 2015: 6 · 2014: 7 · 2013: 10 · 2012: 9
- FWCI
- 4.39
- Type
- journal article
- Language
- en
- Open access
- green
- arxiv.org
- Locations
- Nuclear Physics B (publishedVersion)
- arXiv (Cornell University) (submittedVersion)
- CERN Document Server (European Organization for Nuclear Research) (submittedVersion)
- arXiv (Cornell University)
- Funders
- Ambrose Monell Foundation
- Nuclear Physics
- Topics
- Physical Sciences › Physics and Astronomy › Nuclear and High Energy Physics › Nuclear physics research studies
- Physical Sciences › Physics and Astronomy › Statistical and Nonlinear Physics › Advanced Mathematical Theories and Applications
- Physical Sciences › Physics and Astronomy › Nuclear and High Energy Physics › Particle physics theoretical and experimental studies
- Keywords
- fine-structure constant variation, alpha variation, rare earth isotopes, isotope shift
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