Some Fundamental Issues in Ground-State Density Functional Theory: A Guide for the Perplexed.

@article{Perdew2009SomeFI,
  title={Some Fundamental Issues in Ground-State Density Functional Theory: A Guide for the Perplexed.},
  author={John P Perdew and Adrienn Ruzsinszky and Lucian A. Constantin and Jianwei Sun and G{\'a}bor I. Csonka},
  journal={Journal of chemical theory and computation},
  year={2009},
  volume={5 4},
  pages={
          902-8
        }
}
Some fundamental issues in ground-state density functional theory are discussed without equations: (1) The standard Hohenberg-Kohn and Kohn-Sham theorems were proven for a Hamiltonian that is not quite exact for real atoms, molecules, and solids. (2) The density functional for the exchange-correlation energy, which must be approximated, arises from the tendency of electrons to avoid one another as they move through the electron density. (3) In the absence of a magnetic field, either spin… CONTINUE READING
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