Robert F. Gordon, Edward A. MacNair, et al.
WSC 1985
In Kohn-Sham density functional theory, equations for occupied orbital functions of a model state are derived from the exact ground-state energy functional of Hohenberg and Kohn. The exchange-correlation potential in these exact Kohn-Sham equations is commonly assumed to be a local potential function rather than a more general linear operator. This assumption is tested and shown to fail for the exchange potential in a Hartree-Fock model for atoms, for which accurate solutions are known.
Robert F. Gordon, Edward A. MacNair, et al.
WSC 1985
Vladimir Yanovski, Israel A. Wagner, et al.
Ann. Math. Artif. Intell.
Harpreet S. Sawhney
IS&T/SPIE Electronic Imaging 1994
Martin Charles Golumbic, Renu C. Laskar
Discrete Applied Mathematics