5 papers
Nonlocal potentials in independent-electron models
R. K. Nesbet
This note summarizes the motivation for extending current density-functional theory to include nonlocal one-electron potentials, and proposes methodology for practical calculations…
Nonlocal potentials for short-range electronic correlation in atoms, molecules, and solids
R. K. Nesbet
Extending density functional theory (DFT) to an {\it ab initio} orbital functional theory (OFT) requires new methodology for nonlocal exchange and correlation potentials. This pape…
Reply to Lindgren and Salomonson
R. K. Nesbet
In the accompanying Comment [Phys. Rev. A {\bf 67}, 056501 (2003)], I. Lindgren and S. Salomonson claim to prove for the Kohn-Sham kinetic energy functional of ground state electro…
Reply to Comment by Holas and March
R. K. Nesbet
The accompanying Comment by A. Holas and N. H. March [Phys. Rev. A {\bf 66}, 066501 (2002)] is concerned with the issue of whether or not kinetic energy can be represented by an ef…
Variational derivation of density functional theory
R. K. Nesbet
It is shown here that Kohn-Sham equations cannot be derived from Hohenberg-Kohn theory without an additional postulate. Assuming that a functional derivative with respect to total…