JJGEN: A flexible program for generating lists of j j-coupled configuration state functions

Research output: Contribution to journalArticle


The success of large scale relativistic multiconfiguration Dirac-Hartree-Fock calculations for atomic systems rely on judiciously chosen configuration expansions. Dependent on the atomic system as well as on the studied properties, various correlation effects need to be considered. Based on the active set approach, this program allows the user to generate general lists of j j-coupled configuration state functions to be used as input to the grasp2K multiconfiguration Dirac-Hartree-Fock package [P Jonsson, X. He, C. Froese Fischer, I.P. Grant, Comput. Phys. Comm. (2007), in press].


  • Lennart Sturesson
  • P. Jönsson
  • C. Froese Fischer
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Atom and Molecular Physics and Optics


  • active set, active, space, complete active space, restricted active space, reference set, multireference set, excitations, active orbitals, inactive orbitals, expansion, configuration, jj-coupled configuration state functions, correlation, pair, core-core correlation, core-valence correlation, valence, multiconfiguration Dirac-Hartree-Fock, electron correlation
Original languageEnglish
Pages (from-to)539-550
JournalComputer Physics Communications
Issue number6
Publication statusPublished - 2007
Publication categoryResearch