Time Variation of Fundamental Constants as a Probe of New Physics
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Time variation of fundamental constants would not be surprising in the framework of theories involving extra dimensions. The variation of any one constant is likely to be correlated with variations of others in a pattern that is diagnostic of the underlying physics.
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Setting R = d ln Lambda_QCD/d ln alpha_EM, R is approximately 34 with a stated accuracy of about 20%, assuming only alpha_U can vary.
“R $ 34 with a stated accuracy of about 20% (Langacker et al. 2002;Langacker 2004) (assuming only a U can vary)”
From Fundamental constants: from measurement to the universe, a window on gravitation and cosmology (2025) · cites this paper as Langacker 2004
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Cited by
Sorted by citations
Fundamental constants: from measurement to the universe, a window on gravitation and cosmology
Uzan, J.-P. (2025) · Living Reviews in Relativity · doi:10.1007/s41114-025-00059-y · Cited by 36 · see citing works
- Authors
- Langacker, P.
- Affiliations
- University of Pennsylvania (US)
- Corresponding author
- Langacker, Paul
- ORCID
- Langacker, Paul
- Venue
- International Journal of Modern Physics A
- Publisher
- World Scientific Pub Co Pte Lt
- Published
- 2004-02
- Volume
- 19
- Issue
- supp01
- Pages
- 157-165
- ISSN
- 0217-751X (ISSN-L)
- 1793-656X
- OpenAlex
- W2021151146
- Cited by
- 14
- References
- 17
- Citations by year
- 2025: 1 · 2022: 2 · 2019: 1 · 2017: 2 · 2016: 3 · 2012: 1
- FWCI
- 0.20
- Type
- journal article
- Language
- en
- Open access
- green
- arxiv.org
- Locations
- International Journal of Modern Physics A (publishedVersion)
- arXiv (Cornell University) (submittedVersion)
- arXiv (Cornell University)
- Funders
- U.S. Department of Energy (DOE-EY-76-02-3071, EY-76)
- Topics
- Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Cosmology and Gravitation Theories
- Physical Sciences › Physics and Astronomy › Statistical and Nonlinear Physics › Noncommutative and Quantum Gravity Theories
- Physical Sciences › Physics and Astronomy › Statistical and Nonlinear Physics › Advanced Mathematical Theories and Applications
- Keywords
- variation of fundamental constants, extra dimensions, beyond the Standard Model, fundamental physical constants
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