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Long-range Rydberg–Rydberg interactions in calcium, strontium and ytterbium.

Vaillant, C.L. and Jones, M.P.A. and Potvliege , R.M. (2012) 'Long-range Rydberg–Rydberg interactions in calcium, strontium and ytterbium.', Journal of physics B : atomic, molecular and optical physics., 45 (13). p. 135004.


Long-range dipole–dipole and quadrupole–quadrupole interactions between pairs of Rydberg atoms are calculated perturbatively for calcium, strontium and ytterbium within the Coulomb approximation. Quantum defects, obtained by fitting existing laser spectroscopic data, are provided for all S, P, D and F series of strontium and for the 3P2 series of calcium. The results show qualitative differences with the alkali metal atoms, including isotropically attractive interactions of the strontium 1S0 states and a greater rarity of Förster resonances. Only two such resonances are identified, both in triplet series of strontium. The angular dependence of the long-range interaction is briefly discussed.

Item Type:Article
Full text:(AM) Accepted Manuscript
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Publisher statement:© 2012 IOP Publishing.
Date accepted:No date available
Date deposited:24 April 2013
Date of first online publication:July 2012
Date first made open access:No date available

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