Reconciliation of experimental and theoretical electric tensor polarizabilities of the cesium ground state
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Ulzega, Simone
Physics Department, University of Fribourg, Switzerland
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Hofer, Adrian
Physics Department, University of Fribourg, Switzerland
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Moroshkin, Peter
Physics Department, University of Fribourg, Switzerland
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Weis, Antoine
Physics Department, University of Fribourg, Switzerland
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Published in:
- Europhysics Letters. - 2006, vol. 76, no. 6, p. 1074-1080
English
We present a new theoretical analysis of the strongly suppressed F- and M-dependent Stark shifts of the Cs ground-state hyperfine structure. Our treatment uses third-order perturbation theory including off-diagonal hyperfine interactions not considered in earlier treatments. A numerical evaluation of the perturbation sum using bound states up to n = 200 yields ground-state tensor polarizabilities α₂(6S1/2,F) which are in good agreement with experimental values, thereby bridging the 40-year-old gap between experiments and theory. We have further found that the tensor polarizabilities of the two ground-state hyperfine manifolds have opposite signs, in disagreement with an earlier derivation. This sign error has a direct implication for the precise evaluation of the blackbody radiation shift in primary frequency standards.
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Faculty
- Faculté des sciences et de médecine
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Department
- Département de Physique
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Language
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Classification
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Physics
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License
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License undefined
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Identifiers
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Persistent URL
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https://folia.unifr.ch/unifr/documents/300273
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