Abstract
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.
- Received 14 December 2007
DOI:https://doi.org/10.1103/PhysRevLett.100.256406
©2008 American Physical Society