Charge-constrained auxiliary-density-matrix methods for the Hartree-Fock exchange contribution.

نویسندگان

  • Patrick Merlot
  • Róbert Izsák
  • Alex Borgoo
  • Thomas Kjærgaard
  • Trygve Helgaker
  • Simen Reine
چکیده

Three new variants of the auxiliary-density-matrix method (ADMM) of Guidon, Hutter, and VandeVondele [J. Chem. Theory Comput. 6, 2348 (2010)] are presented with the common feature that they have a simplified constraint compared with the full orthonormality requirement of the earlier ADMM1 method. All ADMM variants are tested for accuracy and performance in all-electron B3LYP calculations with several commonly used basis sets. The effect of the choice of the exchange functional for the ADMM exchange-correction term is also investigated.

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عنوان ژورنال:
  • The Journal of chemical physics

دوره 141 9  شماره 

صفحات  -

تاریخ انتشار 2014