Puzzle of the constancy of fundamental constants

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dc.creatorVarshalovich, D. A.
dc.creatorPotekhin, A. Y.
dc.creatorIvanchik, A. V.
dc.date2000-04-26
dc.date.accessioned2026-07-07T05:44:03Z
dc.date.available2026-07-07T05:44:03Z
dc.descriptionWe discuss experiments and observations aimed at testing the possible space-time variability of fundamental physical constants, predicted by the modern theory. Specifically, we consider two of the dimensionless physical parameters which are important for atomic and molecular physics: the fine-structure constant and the electron-to-proton mass ratio. We review the current status of such experiments and critically analyze recent claims of a detection of the variability of the fine-structure constant on the cosmological time scale. We stress that such a detection remains to be checked by future experiments and observations. The tightest of the firmly established upper limits read that the considered constants could not vary by more than 0.015% on the scale of 10 Gigayears.
dc.description6 pages, plain LaTeX. Accepted for publication in Comments on Atomic and Molecular Physics
dc.identifierhttps://arxiv.org/abs/physics/0004068
dc.identifierhttp://arxiv.org/abs/physics/0004068
dc.identifierComments on Modern Physics 2 (2001) D223-D232
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/83485
dc.subjectAtomic Physics
dc.subjectAstrophysics
dc.subjectGeneral Physics
dc.titlePuzzle of the constancy of fundamental constants
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