Physics – Atomic Physics
Scientific paper
2006-02-13
Physics
Atomic Physics
4 pages, 1 figure, submitted to Physical Review Letters
Scientific paper
10.1103/PhysRevA.74.020502
A black-body radiation (BBR) shifts of (nsnp ^3P_0) - (ns^2 ^1S_0) clock transition in divalent atoms Mg, Ca, Sr, and Yb are evaluated. A theory of multipolar BBR shifts is developed and its implications are discussed. At room temperatures, the resulting uncertainties in the BBR shifts are relatively large and substantially affect the projected 10^{-18} fractional accuracy of the optical-lattice-based clocks.
Derevianko Andrei
Porsev Sergey G.
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