The Density Functional via Effective Action
Other Condensed Matter
2009-09-22 v1
Abstract
A rigorous derivation of the density functional via the effective action in the Hohenberg-Kohn theory is outlined. Using the auxiliary field method, in which the electric coupling constant need not be small, we show that the loop expansion of the exchange-correlation functional can be reorganized so as to be expressed entirely in terms of the Kohn-Sham single-particle orbitals and energies.
Cite
@article{arxiv.0909.3673,
title = {The Density Functional via Effective Action},
author = {Yi-Kuo Yu},
journal= {arXiv preprint arXiv:0909.3673},
year = {2009}
}