Nonlocal van der Waals Density Functional Made Simple
Year: 2009
Type: article
Abstract: We derive a nonlocal correlation functional that adequately describes van der Waals interactions not only in the asymptotic long-range regime but also at short range. Unlike its precursor, developed by Langreth, Lundqvist, and co-workers, the new functional has a simple analytic form, finite for all interelectron separations, well behaved in the slowly varying density limit, and generalized to spin-polarized systems.
Source: Physical Review Letters
Authors: Oleg A. Vydrov, Troy Van Voorhis
Institution: Massachusetts Institute of Technology
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W2104873860