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- W71110306 abstract "The so-called pseudo-atom, a completely solvable many-body model system, is analyzed by studying the analytical properties of its exact, as well as some independent-particle effective Hamiltonians (as the Hartree, Hartree--Fock, HFA, etc.) and also the correlation potentials. The attractive and repulsive potential operators are plotted and compared with the corresponding potentials for atoms to show when and how calculations on the pseudo-atom model can provide relevant information for the atomic physicist. It is shown that important differences between physical systems and the model exist, permitting some apparently paradoxical results obtained before to be explained and a prediction for how a given approximation technique will fare when applied to the pseudo-atom. The general conclusion reached is that to make relevant predictions for atoms, starting from pseudo-atomic calculations, great care must be taken to assess how the peculiar characteristics of the model will deform the information. Then, one can confidently draw conclusions for atoms by reconstructing the deformed image given by the pseudo-atom. (auth)" @default.
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- W71110306 date "1973-01-01" @default.
- W71110306 modified "2023-09-23" @default.
- W71110306 title "Pseudo atom: a distorted image of atomic systems" @default.
- W71110306 hasPublicationYear "1973" @default.
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