Stark effect of the cesium ground state: electric tensor polarizability and shift of the clock transition frequency

2006/04/28 by S. Ulzega, A. Hofer, Ulzega, S. +5
Physics and Astronomy · #Atomic Physics (physics.atom-ph) #FOS: Physical sciences #physics.atom-ph

paper · pdf · doi:10.48550/arxiv.physics/0604233

References added, Fig.4 modified

arxiv created 2006/06/06 · arxiv updated 2009/12/01

Abstract

We present a theoretical analysis of the Stark effect in the hyperfine structure of the cesium ground-state. We have used third order perturbation theory, including diagonal and off-diagonal hyperfine interactions, and have identified terms which were not considered in earlier treatments. A numerical evaluation using perturbing levels up to n=18 yields new values for the tensor polarizability α₂(6S_1/2) and for the Stark shift of the clock transition frequency in cesium. The polarizabilities are in good agreement with experimental values, thereby removing a 40-year-old discrepancy. The clock shift value is in excellent agreement with a recent measurement, but in contradiction with the commonly accepted value used to correct the black-body shift of primary frequency standards.

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