Background and activities


My research is focused at developing electronic-structure models for molecular systems. Previously my research was directed towards low-scaling and multilevel approaches in mean-field and correlated (coupled cluster) approaches, but I am currently working on developing wave function models for systems where electron number is not a conserved quantity.

Scientific, academic and artistic work

Displaying a selection of activities. See all publications in the database

Journal publications


  • Høyvik, Ida-Marie. (2013) Local Hartree-Fock orbitals; characterization, structure and optimization. 2013.


  • Koch, Henrik; Andersen, Josefine; Balbi, Alice; Coriani, Sonia; Folkestad, Sarai Dery; Giovannini, Tommaso; Goletto, Linda; Haugland, Tor Strømsem; Hutcheson, Anders; Høyvik, Ida-Marie; Kjønstad, Eirik Fadum; Moitra, Torsha; Myhre, Rolf Heilemann; Paul, Alexander Christian; Roet, Sander; Scavino, Marco; Skeidsvoll, Andreas Sæther; Tveten, Åsmund. (2020) eT - an electronic structure program., 2020.
  • Folkestad, Sarai Dery; Høyvik, Ida-Marie; Koch, Henrik. (2017) Multilevel coupled cluster theory for valence and core excited states. 11th Triennial Congress of the World Association of Theoretical and Computational Chemistry ; 2017-08-27 - 2017-09-01.
  • Høyvik, Ida-Marie. (2016) Local Hartree--Fock orbitals and electronic properties of the molecule. International Society for Theoretical Chemical Physics ; 2016-07-17 - 2016-07-22.
  • Høyvik, Ida-Marie. (2016) Molecular orbital density matrix based Hartree-Fock energy optimization. Magical mystery tour of electron correlation, in Honour of Jeppe Olsen ; Oslo, Norge. 2016-10-24 - 2016-10-26.
  • Høyvik, Ida-Marie. (2014) Orbital transformations for localizing non-orthogonal molecular orbitals. Det 20. landsmøte i kjemi (seksjonen for kvantekjemi og modellering) ; 2014-10-29 - 2014-10-30.
  • Høyvik, Ida-Marie. (2013) Local occupied and virtual Hartree-Fock orbitals. 7th Molecular Quantum Mechanics Congress ; 2013-06-02 - 2013-06-07.
  • Høyvik, Ida-Marie. (2013) On the localizability of orthonormal occupied and virtual Hartree-Fock orbitals. The VIIIth Congress of the International Society of Theoretical Chemical Physics ; 2013-08-25 - 2013-08-31.