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  • Almbladh, Carl-Olof, et al. (author)
  • Accuracy of the Hartree-Fock and Local Density Approximations for Electron Densities: A study for Light Atoms
  • 1983
  • In: Physica Scripta. - 0031-8949. ; 28:3, s. 193-389
  • Journal article (peer-reviewed)abstract
    • We compare the electron densities and Hartree potentials in the local density and the Hartree-Fock approximations to the corresponding quantities obtained from more accurate correlated wavefunctions. The comparison is made for a number of two-electron atoms, Li, and for Be. The Hartree-Fock approximation is more accurate than the local density approximation within the 1s shell and for the spin polarization in Li, while the local density approximation is slightly better than the Hartree-Fock approximation for charge densities in the 2s shell. The inaccuracy of the Hartree-Fock and local density approximations to the Hartree potential is substantially smaller than the inaccuracy of the local density approximation to the ground-state exchange-correlation potential.
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Type of publication
journal article (1)
Type of content
peer-reviewed (1)
Author/Editor
Ekenberg, Ulf (1)
Almbladh, Carl-Olof (1)
Perdoza, Antonio Car ... (1)
University
Lund University (1)
Language
English (1)
Research subject (UKÄ/SCB)
Natural sciences (1)
Year
1983 (1)

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