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Updated: Jul 19, 2026

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Published on: May 27, 2020
Efficient evaluation of short-range Hartree-Fock exchange in large molecules and periodic systems
Artur F Izmaylov1, Gustavo E Scuseria, Michael J Frisch
1Department of Chemistry, Rice University, Houston, TX 77005, USA. arthuri@rice.edu
Abstract:
We present an efficient algorithm for the evaluation of short-range Hartree-Fock exchange energies and geometry gradients in Gaussian basis sets. Our method uses a hierarchy of screening levels to eliminate negligible two-electron integrals whose evaluation is the fundamental computational bottleneck of the procedure. By applying our screening technique to the Heyd-Scuseria-Ernzerhof [J. Chem. Phys. 118, 8207 (2003)] short-range Coulomb hybrid density functional, we achieve a computational efficiency comparable with that of standard nonhybrid density functional calculations.
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