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arXiv · 1404.4862

Entanglement entropies in the ground states of helium-like atoms

Przemyslaw Koscik·Anna Okopinska
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Abstract

We examine the entanglement in the ground states of helium and helium-like ions using an original Hylleraas expansion. The von Neumann and linear entropies of the reduced density matrix are accurately computed by performing the Schmidt decomposition of the S singlet spatial wavefunctions. The results presented are more accurate than currently available in published literature.

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Przemyslaw Koscik, Anna Okopinska. 2014-04-18. Entanglement entropies in the ground states of helium-like atoms. https://doi.org/10.1007/s00601-014-0902-7

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