Analysis of atomic-clock data to constrain variations of fundamental constants

We present a new framework to study the time variation of fundamental constants in a model-independent way. Model independence implies more free parameters than assumed in previous studies. Using data from atomic clocks based on \(^{87}\)Sr, \(^{171}\)Yb\(^+\) and \(^{133}\)Cs, we set bounds on para...

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Bibliographic Details
Published in:arXiv.org 2023-12
Main Authors: Sherrill, Nathaniel, Parsons, Adam O, Baynham, Charles F A, Bowden, William, Curtis, E Anne, Hendricks, Richard, Hill, Ian R, Hobson, Richard, Margolis, Helen S, Robertson, Billy I, Schioppo, Marco, Szymaniec, Krzysztof, Tofful, Alexandra, Tunesi, Jacob, Godun, Rachel M, Calmet, Xavier
Format: Article
Language:English
Subjects:
Atomic clocks
Dark matter
Mathematical models
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Summary:We present a new framework to study the time variation of fundamental constants in a model-independent way. Model independence implies more free parameters than assumed in previous studies. Using data from atomic clocks based on \(^{87}\)Sr, \(^{171}\)Yb\(^+\) and \(^{133}\)Cs, we set bounds on parameters controlling the variation of the fine-structure constant, \(\alpha\), and the electron-to-proton mass ratio, \(\mu\). We consider variations on timescales ranging from a minute to almost a day. In addition, we use our results to derive some of the tightest limits to date on the parameter space of models of ultralight dark matter and axion-like particles.
ISSN:2331-8422