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Blackbody radiation shift in the Sr optical atomic clock
M. S. Safronova, S. G. Porsev, U. I. Safronova +2
We evaluated the static and dynamic polarizabilities of the 5s^2 ^1S_0 and 5s5p ^3P_0^o states of Sr using the high-precision relativistic configuration interaction + all-order met…
Ytterbium in quantum gases and atomic clocks: van der Waals interactions and blackbody shifts
M. S. Safronova, S. G. Porsev, Charles W. Clark
We evaluated the C_6 coefficients of Yb-Yb and Yb -alkali/group II van der Waals interactions with 2% uncertainty. The only existing results for such quantities are for the Yb-Yb d…
Magic wavelengths for optical cooling and trapping of lithium
M. S. Safronova, U. I. Safronova, Charles W. Clark
Using first-principles calculations, we identify magic wavelengths for the 2s-2p and 2s-3p transitions in lithium. The ns and np atomic levels have the same ac Stark shifts at the…
Polarizabilities of Si^{2+}: a benchmark test of theory and experiment
M. S. Safronova, S. G. Porsev, M. G. Kozlov +1
We have calculated electric-dipole polarizabilities of the 3s^2 ^1S_0, 3s3p ^3P_0, and 3s3p ^1P_1 states of the Si^{2+} ion using recently developed configuration interaction + all…