Semiclassical origins of density functionals.
The relation between semiclassical and density-functional approximations is clarified. Semiclassical approximations both explain and improve upon density-gradient expansions for finite systems. We derive highly accurate density and kinetic energy functionals of the potential in one dimension.
Elliott
Peter
P
Department of Chemistry, University of California, Irvine, California 92697, USA.
Lee
Donghyung
D
Cangi
Attila
A
Burke
Kieron
K