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arXiv · 0910.2064

Magnetic blackbody shift of hyperfine transitions for atomic clocks

J. C. Berengut·V. V. Flambaum·J. King-Lacroix
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Abstract

We derive an expression for the magnetic blackbody shift of hyperfine transitions such as the cesium primary reference transition which defines the second. The shift is found to be a complicated function of temperature, and has a T^2 dependence only in the high-temperature limit. We also calculate the shift of ground-state p_1/2 hyperfine transitions which have been proposed as new atomic clock transitions. In this case interaction with the p_3/2 fine-structure multiplet may be the dominant effect.

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J. C. Berengut, V. V. Flambaum, J. King-Lacroix. 2009-10-12. Magnetic blackbody shift of hyperfine transitions for atomic clocks. https://doi.org/10.1103/physreva.80.064101

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