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arXiv · 1204.6577

Relativistic coupled-cluster single-double calculations of positron-atom bound states

V. A. Dzuba·V. V. Flambaum·G. F. Gribakin·C. Harabati
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Abstract

Relativistic coupled-cluster single-double approximation is used to calculate positron-atom bound states. The method is tested on closed-shell atoms such as Be, Mg, Ca, Zn, Cd, and Hg where a number of accurate calculations is available. It is then used to calculate positron binding energies for a range of open-shell transition metal atoms from Sc to Cu, from Y to Pd, and from Lu to Pt. These systems possess Feshbach resonances, which can be used to search for positron-atom binding experimentally through resonant annihilation or scattering.

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V. A. Dzuba, V. V. Flambaum, G. F. Gribakin, C. Harabati. 2012-04-30. Relativistic coupled-cluster single-double calculations of positron-atom bound states. https://doi.org/10.1103/physreva.86.032503

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