Self-interaction correction to density-functional approximations for many-electron systems

  title={Self-interaction correction to density-functional approximations for many-electron systems},
  author={John P. Perdew and Alex Zunger},
  journal={Physical Review B},
exchange and correlation, are not. We present two related methods for the self-interaction correction (SIC) of any density functional for the energy; correction of the self-consistent one-electron potenial follows naturally from the variational principle. Both methods are sanctioned by the Hohenberg-Kohn theorem, Although the first method introduces an orbital-dependent single-particle potential, the second involves a local potential as in the Kohn-Sham scheme. We apply the first method to LSD… 
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