This article has an erratum: [erratum]
Volume 76, Number 6, December 2006
|Page(s)||1074 - 1080|
|Section||Atomic and molecular physics|
|Published online||16 November 2006|
Reconciliation of experimental and theoretical electric tensor polarizabilities of the cesium ground state
Physics Department, University of Fribourg Chemin du Musée 3, 1700 Fribourg, Switzerland
Corresponding author: firstname.lastname@example.org
Accepted: 19 October 2006
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 yields ground-state tensor polarizabilities 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.
PACS: 32.60.+i – Zeeman and Stark effects / 31.15.Md – Perturbation theory / 06.30.Ft – Time and frequency
© EDP Sciences, 2006
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