A stringent limit on a drifting proton-to-electron mass ratio from alcohol in the early Universe

J. Bagdonaite; P. Jansen; C. Henkel; H.L. Bethlem; K. Menten; W.M.G. Ubachs

doi:10.1126/science.1224898

A stringent limit on a drifting proton-to-electron mass ratio from alcohol in the early Universe

J. Bagdonaite, P. Jansen, C. Henkel, H.L. Bethlem, K. Menten, W.M.G. Ubachs

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Abstract

The standard model of physics is built on the fundamental constants of nature, but it does not provide an explanation for their values, nor require their constancy over space and time. Here we set a limit on a possible cosmological variation of the proton-to-electron mass ratio μ by comparing transitions in methanol observed in the early universe with those measured in the laboratory. From radio-astronomical observations of PKS1830-211, we deduced a constraint of Δμ/μ = (0.0 ± 1.0) × 10

Original language	English
Pages (from-to)	46-48
Number of pages	3
Journal	Science
Volume	339
Issue number	6115
Early online date	13 Dec 2012
DOIs	https://doi.org/10.1126/science.1224898
Publication status	Published - 2013

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abstract = "The standard model of physics is built on the fundamental constants of nature, but it does not provide an explanation for their values, nor require their constancy over space and time. Here we set a limit on a possible cosmological variation of the proton-to-electron mass ratio μ by comparing transitions in methanol observed in the early universe with those measured in the laboratory. From radio-astronomical observations of PKS1830-211, we deduced a constraint of Δμ/μ = (0.0 ± 1.0) × 10",

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AB - The standard model of physics is built on the fundamental constants of nature, but it does not provide an explanation for their values, nor require their constancy over space and time. Here we set a limit on a possible cosmological variation of the proton-to-electron mass ratio μ by comparing transitions in methanol observed in the early universe with those measured in the laboratory. From radio-astronomical observations of PKS1830-211, we deduced a constraint of Δμ/μ = (0.0 ± 1.0) × 10

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A stringent limit on a drifting proton-to-electron mass ratio from alcohol in the early Universe

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