Off-diagonal hyperfine interaction between the 6p1/2 and 6p3/2 levels in 133Cs
Atomic Physics
2009-11-10 v1
Abstract
The off-diagonal hyperfine interaction between the 6p1/2 and 6p3/2 states in 133Cs is evaluated in third-order MBPT giving 37.3 Hz and 48.3 Hz, respectively, for second-order energies of the 6p3/2 F=3 and F=4 levels. This result is a factor of 10 smaller than one obtained from an uncorrelated first-order Dirac-Hartree-Fock calculation and used in the analysis of a recent high-precision (< 2 kHz) measurement of the 6p3/2 hyperfine structure [Gerginov et al. Phys. Rev. Lett. 91, 72301 (2003)]. The factor of 10 difference has negligible effect on the conclusions of the recent experiment but will become important for experiments carried out at a precision of better than 1 kHz.
Cite
@article{arxiv.physics/0404102,
title = {Off-diagonal hyperfine interaction between the 6p1/2 and 6p3/2 levels in 133Cs},
author = {W. R. Johnson and H. C. Ho and Carol E. Tanner and Andrei Derevianko},
journal= {arXiv preprint arXiv:physics/0404102},
year = {2009}
}