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Theoretical Particle Physics

What type of particle constitutes the dark matter that makes up about 85% of the Universe's matter content? How do neutrinos acquire mass? What is the nature of the right-handed neutrino? Why is there more matter than antimatter in the Universe? To address questions like these, we study theories that go beyond the Standard Model of particle physics.

Theoretical aspects of particle physics involve

  • Modelling of elementary particles and their interactions
  • Studying models that can predict new phenomena or explain experimental anomalies
  • Working alongside experiments in determining the prospects of new experiments for further probing of our current theories.

Theoretical particle physicists often work in cooperation with experimental collaborations, looking for new ways to probe the inner mechanisms of the Universe, from the Big Bang to solar processes and particle physics at accelerators.

The theoretical particle physics group at KTH is particularly interested in the physics of neutrinos, very light neutral particles related to electrons, and those of dark matter. The research is conducted in projects with members of the faculty and students working in smaller groups with international collaborators all over the world. The group also has direct interests in the experimental neutrino oscillation community as members of experimental collaborations such as the Deep Underground Neutrino Experiment (DUNE), Hyper-Kamiokande, India-based Neutrino Observatory (INO), and the European Spallation Source Neutrino Super Beam (ESSnuSB).