iOI: an Iterative Orbital Interaction Approach for Solving the Self-Consistent Field Problem
Chemical Physics
2021-05-04 v1
Abstract
An iterative orbital interaction (iOI) approach is proposed to solve, in a bottom-up fashion, the self-consistent field problem in quantum chemistry. While it belongs grossly to the family of fragment-based quantum chemical methods, iOI is distinctive in that (1) it divides and conquers not only the energy but also the wave function, and that (2) the subsystems sizes are automatically determined by successively merging neighboring small subsystems until they are just enough for converging the wave function to a given accuracy. Orthonormal occupied and virtual localized molecular orbitals are obtained in a natural manner, which can be used for all post-SCF purposes.
Cite
@article{arxiv.2105.00205,
title = {iOI: an Iterative Orbital Interaction Approach for Solving the Self-Consistent Field Problem},
author = {Zikuan Wang and Wenjian Liu},
journal= {arXiv preprint arXiv:2105.00205},
year = {2021}
}
Comments
45 pages, 6 figures