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Sensitivity coefficients to variation of fundamental constants · Around

2018

Sensitivity coefficients to variation of fundamental constants

Kozlov, M. G., Budker, D.

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Atoms and molecules can serve as sensitive probes of a possible variation of the fine structure constant $\alpha$ and electron-to-proton mass ratio $\mu$.

Two types of sensitivity coefficients are often used to quantify and compare the sensitivity of different species to the variation of fundamental constants.
The dimensionless coefficients $K$ are related to the fractional sensitivity, while dimensional factors $q$ are related to the absolute sensitivity.
Here we discuss several common errors and misconceptions regarding these coefficients that frequently appear in the literature.

Built on

V. A. Dzuba, V. V. Flambaum, and J. K. Webb Phys. Rev. Lett. 82
1999
Earlier work this paper cites.
V. A. Dzuba, V. V. Flambaum, and J. K. Webb Phys. Rev. A 59
1999
Earlier work this paper cites.
A. T. Nguyen, D. Budker, S. K. Lamoreaux, and J. R. Torgerson Phys. Rev. A 69
2004
Earlier work this paper cites.

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