Abstract
We present many-body results for ground-state properties of two simple but very distinct families of inhomogeneous systems in which traditional implementations of density-functional theory (DFT) fail drastically. The approach gives notably better results than the well-known random-phase approximation, at a similar computational cost. These results establish as a superior alternative to standard DFT schemes without the expensive numerical effort required by quantum Monte Carlo simulations.
- Received 5 November 2001
DOI:https://doi.org/10.1103/PhysRevLett.88.056406
©2002 American Physical Society