Self-consistent assessment of Englert-Schwinger model on atomic properties
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Lehtomäki J., Lopez-Acevedo O.
Lehtomäki, J., COMP Centre of Excellence, Department of Applied Physics, Aalto University, P.O. Box 11100, Aalto, Finland; Lopez-Acevedo, O., COMP Centre of Excellence, Department of Applied Physics, Aalto University, P.O. Box 11100, Aalto, Finland, Universidad de Medellín, Medellín, Colombia
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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)-λvW family. Results show that the ES model generally offers the same accuracy as the well-known TFD-15vW model; however, the ES model corrects the failure in the 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. © 2017 Author(s).
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