I am a theoretical physicist with a strong interest in computational physics and many-body theory in general, and the nuclear many-body problem and nuclear structure problems in particular. This means that I study various methods for solving either Schrödinger's equation or Dirac's equation for many interacting particles, spanning from algorithmic aspects to the mathematical properties of such methods. The latter also leads to a strong interest in computational physics as well as computational aspects of quantum mechanical methods. I share my time equally between Michigan State University in the US (January-June) and the University of Oslo, Norway (July-December).
Details about research projects, undergraduate and graduate thesis projects etc can be found at my website.
In addition, I'm strongly involved in teaching at all levels. I have been heading the bachelor program Physics, Astronomy and Meteorology ( FAM ) in the period 2002-2011. I am also strongly involved in the project Computing in Science Education. Furthermore, with European and American colleagues, we have established the recent successful Nuclear Talent initiative.
Please feel free to come by and discuss. I teach now the following courses at the University of Oslo and Michigan State University:
- FYS3150 Computational Physics I, Fall semester, senior undergraduate level (Oslo)
- FYS4411 Computational Physics II: Quantum mechanical systems, M.S and PhD level, Spring semester (Oslo)
- FYS-KJM4480 Quantum mechanics for many-particle systems, M.S. and PhD level, Fall semester (Oslo)
- PHY981 Nuclear Structure, Spring semester Michigan State University (MSU)
- PHY480/905 Computational Physics, Spring semester (MSU)
In 2016 the Nuclear Talent initiative organizes two new courses for graduate students in nuclear physics. During the last ten years I have taught advanced nuclear physics topics at several schools, totaling more than 200 one hour lectures. You can find more about me and my research and educational interests at my website or on Google Scholar, see http://scholar.google.com./citations?user=nuiyEmwAAAAJ
- Hagen et al, Nature Physics 12, 186 Neutron and weak-charge distributions of the48Ca nucleus
- Ekström et al, Physical Review C 91, 051301(R) (2015), Accurate nuclear radii and binding energies from a chiral interaction
- Hagen et al, Reports on Progress in Physics 79, 096302 (2014), Coupled-cluster computations of atomic nuclei
- Hagen et al, Physical Review C 89, 014319 (2014), Coupled-cluster calculations of nucleonic matter
- Ekström et al, Physical Review Letters 110, 192502 (2013), Optimized Chiral Nucleon-Nucleon Interaction at Next-to-Next-to-Leading Order
- Baardsen et al, Physical Review C 88, 054312 (2013), Coupled-cluster studies of infinite nuclear matter
- Ø. Jensen et al, Physical Review Letters 107, 032501 (2011), Quenching of Spectroscopic Factors for Proton Removal in Oxygen Isotopes
- G. Hagen et al, Physical Review Letters 109, 032502 (2012), Evolution of Shell Structure in Neutron-Rich Calcium Isotopes
- M. Pedersen Lohne et al, Physical Review B 84, 115302 (2011), Ab initio computation of the energies of circular quantum dots
- M. Hjorth-Jensen, Physics 4, 38 (2011), The carbon challenge
- D. J. Dean and M. Hjorth-Jensen, Reviews of Modern Physics. 75, 607 (2003), Pairing in nuclear systems: from neutron stars to finite nuclei