Accurate interaction energies from perturbation theory based on Kohn-Sham model

Details Accurate interaction energies from perturbation theory based on Kohn-Sham model Accurate interaction energies from perturbation theory based on Kohn-Sham model

2005-01-06

arxiv.org/abs/physics/0501023v1

Physics

Chemical Physics

4 pages, 3 figures

Scientific paper

The density-functional based symmetry-adapted perturbation theory [SAPT(DFT)] has been applied to the argon, krypton, and benzene dimers. It is shown that--at a small fraction of computational costs--SAPT(DFT) can provide similar accuracies for the interaction energies as high-level wave-function based methods with extrapolations to the complete basis set limits. This accuracy is significantly higher than that of any other DFT or DFT-based approaches proposed to date.

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