The Douglas-Kroll-Hess electron density at an atomic nucleus

Research output: Contribution to journalArticle


The picture-change error on Douglas-Kroll-Hess (DKH) electron densities at atomic nuclei is analyzed in detail to high orders. Our results demonstrate that high-order DKH transformations of especially the property operator are needed to obtain converged results. However, if the convergence properties are discussed in terms of a relative error a fast convergence of the picture-change corrected DKH electron density at nuclei with the DKH order of orbitals and property operator is found. Furthermore, our results suggest that already the standard low-order DKH(2,2) model is likely to yield sufficiently accurate difference densities up to the third row of the periodic table. (c) 2008 Elsevier B.V. All rights reserved.


  • Remigius Mastalerz
  • Roland Lindh
  • Markus Reiher
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Atom and Molecular Physics and Optics
Original languageEnglish
Pages (from-to)157-164
JournalChemical Physics Letters
Issue number1-3
Publication statusPublished - 2008
Publication categoryResearch

Bibliographic note

The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Chemical Physics (S) (011001060)