Abstract
Precision spectroscopy of atoms and molecules allows one to search for and to put stringent limits on the variation of fundamental constants. These experiments are typically interpreted in terms of variations of the fine structure constant α and the electron-to-proton mass ratio (Formula presented.). Atomic spectroscopy is usually less sensitive to other fundamental constants, unless the hyperfine structure of atomic levels is studied. However, the number of possible dimensionless constants increases when allowed for fast variations of the constants, where “fast” is determined by the time scale of the response of the studied species or experimental apparatus used. In this case, the relevant dimensionless quantity is, for example, the ratio (Formula presented.) and (Formula presented.) is the time average. In this sense, one may say that the experimental signal depends on the variation of dimensionful constants ((Formula presented.) in this example).
Original language | English |
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Article number | 1900566 |
Number of pages | 5 |
Journal | Annalen der Physik |
Volume | 532 |
Issue number | 4 |
DOIs | |
Publication status | Published - 5 Mar 2020 |
Funding
The authors are grateful to Roee Ozeri, Andrei Derevianko, and Surjeet Rajendran for enlightening discussions. This work received support from the Russian Science Foundation under Grant No 19‐12‐00157, the European Research Council (ERC) under the European Unions Horizon 2020 research and innovation program (grant agreement No 695405 and 614794), from the Simons and Heising‐Simons Foundations, Excellence Cluster PRISMA+, ISF, BSF, Minerva, Segre award, the DFG Reinhart Koselleck project, and NIST. Funding Information Russian Science Foundation. Grant Number: 19‐12‐00157 H2020 European Research Council. Grant Numbers: 695405, 614794 Heising‐Simons Foundation. Grant Number: n/a
All Science Journal Classification (ASJC) codes
- General Physics and Astronomy