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arXiv · 1501.00884

Ab initio interaction potentials and scattering lengths for ultracold mixtures of metastable helium and alkali-metal atoms

Dariusz Kȩdziera·Łukasz Mentel·Piotr S. Żuchowski·Steven Knoop
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Abstract

We have obtained accurate ab initio quartet potentials for the diatomic metastable triplet helium + alkali-metal (Li, Na, K, Rb) systems, using all-electron restricted open-shell coupled cluster singles and doubles with noniterative triples corrections [CCSD(T)] calculations and accurate calculations of the long-range $C_6$ coefficients. These potentials provide accurate ab initio quartet scattering lengths, which for these many-electron systems is possible, because of the small reduced masses and shallow potentials that results in a small amount of bound states. Our results are relevant for ultracold metastable triplet helium + alkali-metal mixture experiments.

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Dariusz Kȩdziera, Łukasz Mentel, Piotr S. Żuchowski, Steven Knoop. 2015-06-26. Ab initio interaction potentials and scattering lengths for ultracold mixtures of metastable helium and alkali-metal atoms. https://doi.org/10.1103/physreva.91.062711

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