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arXiv · 1711.05639

Self-consistent assessment of Englert-Schwinger model on atomic properties

Jouko Lehtomäki·Olga Lopez-Acevedo
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Abstract

Our manuscript investigates a self-consistent solution of the statistical atom model proposed by Berthold-Georg Englert and Julian Schwinger (the ES model) and benchmarks it against atomic Kohn-Sham and two orbital-free models of the Thomas-Fermi-Dirac (TFD)-$λ$vW family. Results show that the ES model generally offers the same accuracy as the well-known TFD-$\frac{1}{5}$vW model; however, the ES model corrects the failure in Pauli potential near-nucleus region. We also point to the inability of describing low-$Z$ atoms as the foremost concern in improving the present model.

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Jouko Lehtomäki, Olga Lopez-Acevedo. 2017-11-15. Self-consistent assessment of Englert-Schwinger model on atomic properties. https://doi.org/10.1063/1.5000908

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