Analysis of atomic-clock data to constrain variations of fundamental constants
oleh: Nathaniel Sherrill, Adam O Parsons, Charles F A Baynham, William Bowden, E Anne Curtis, Richard Hendricks, Ian R Hill, Richard Hobson, Helen S Margolis, Billy I Robertson, Marco Schioppo, Krzysztof Szymaniec, Alexandra Tofful, Jacob Tunesi, Rachel M Godun, Xavier Calmet
| Format: | Article |
|---|---|
| Diterbitkan: | IOP Publishing 2023-01-01 |
Deskripsi
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, α , and the electron-to-proton mass ratio, µ . 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.