Semiclassical origins of density functionals.

Phys Rev Lett

Department of Chemistry, University of California, Irvine, California 92697, USA.

Published: June 2008

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.

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http://dx.doi.org/10.1103/PhysRevLett.100.256406DOI Listing

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