Strictly correlated electrons in density functional theory: A general formulation with applications to spherical densities

Seidl, Michael; Gori-Giorgi, Paola; Savin, Andreas

Strictly correlated electrons in density functional theory: A general formulation with applications to spherical densities

Authors

Seidl, Michael

Gori-Giorgi, Paola

Savin, Andreas

Description

We reformulate the strong-interaction limit of electronic density functional theory in terms of a classical problem with a degenerate minimum. This allows us to clarify many aspects of this limit, and to write a general solution, which is explicitly calculated for spherical densities. We then compare our results with previous approximate solutions and discuss the implications for density functional theory.
12 pages, 9 figures. To appear in Phys. Rev. A