Atom-Centered Potentials to Describe Dispersion Forces in Density Functional Theory

oleh: I-Chun Lin, Ursula Röthlisberger

Format: Article
Diterbitkan: Swiss Chemical Society 2008-04-01

Deskripsi

London dispersion forces are of primordial importance in chemical and biological systems. The Kohn–Sham formalism of density functional theory combined with many popular approximated exchange-correlation functionals either provides sporadic results or fails completely to account for these forces. Dispersion-corrected atom-centered potentials mimic the effect of these forces via atomic orbital-dependent nonlocal potentials whose parameters are obtained by calibrating against references of chosen accuracy. This scheme has shown encouraging outcomes despite its empiricism; the aim of this communication is to give a brief review on the development and applications to date of this promising approach.