Kristian Stølevik Olsen

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Academic interests and research

My research interests belong to the field of mathematical and theoretical physics. In particular, I study non-equilibrium statistical physics of complex states of flowing matter. For example, in anomalous diffusion processes in complex geometries, the scaling exponents of dynamical variables depend on certain relevant geometric and topological quantities.  We have studied such exponents for frictional finger trees, which are space-filling trees emerging from flow instabilities in particle-fluid systems that are believed to lie in the same geometric universality class of 2D minimum spanning trees.

Further interests include renormalization group methods, extreme value statistics, the connection between quantum field theory and statistical physics and topological quantum phases.

Background

I got my B.Sc degree in physics and M.Sc degree in theoretical physics from the University of Oslo. During my masters I worked on the renormalization group flow for the quantum Hall effect and the modular symmetries that accompanies it. I also studied the modular symmetries from a geometric perspective, using moduli spaces of complex elliptic curves equipped with a spin structure. My thesis can be found here.

 

 

Publications

  • Olsen, Kristian Stølevik; Angheluta, Luiza & Flekkøy, Eirik Grude (2022). Collective states of active matter with stochastic reversals: Emergent chiral states and spontaneous current switching. Physical Review Research (PRResearch). ISSN 2643-1564. 4(4). doi: 10.1103/PhysRevResearch.4.043017.
  • Moen, Emily Qing Zang; Olsen, Kristian Stølevik; Rønning, Jonas & Angheluta, Luiza (2022). Trapping of active Brownian and run-and-tumble particles: A first-passage time approach. Physical Review Research (PRResearch). ISSN 2643-1564. 4(4), p. 1–8. doi: 10.1103/PhysRevResearch.4.043012.
  • Morgan, Miles L.; James, David W.; Monloubou, Martin; Olsen, Kristian Stølevik & Sandnes, Bjørnar (2021). Subdiffusion model for granular discharge in a submerged silo. Physical review. E. ISSN 2470-0045. 104(4). doi: 10.1103/PhysRevE.104.044908. Full text in Research Archive
  • Olsen, Kristian Stølevik (2021). Diffusion of active particles with angular velocity reversal. Physical review. E. ISSN 2470-0045. 103(5). doi: 10.1103/PhysRevE.103.052608. Full text in Research Archive
  • Olsen, Kristian Stølevik; Angheluta, Luiza & Flekkøy, Eirik Grude (2021). Active Brownian particles moving through disordered landscapes. Soft Matter. ISSN 1744-683X. doi: 10.1039/d0sm01942a.
  • Olsen, Kristian Stølevik; Angheluta, Luiza & Flekkøy, Eirik Grude (2020). Escape problem for active particles confined to a disk. Physical Review Research (PRResearch). ISSN 2643-1564. 2(4). doi: 10.1103/PhysRevResearch.2.043314. Full text in Research Archive
  • Olsen, Kristian Stølevik & Campbell, James (2020). Diffusion entropy and the path dimension of frictional finger patterns. Frontiers in Physics. ISSN 2296-424X. 8:83, p. 1–5. doi: 10.3389/fphy.2020.00083. Full text in Research Archive
  • Olsen, Kristian Stølevik; Flekkøy, Eirik Grude; Angheluta, Luiza; Campbell, James; Måløy, Knut Jørgen & Sandnes, Bjørnar (2019). Geometric universality and anomalous diffusion in frictional fingers. New Journal of Physics. ISSN 1367-2630. 21(6). doi: 10.1088/1367-2630/ab25bf. Full text in Research Archive
  • Olsen, Kristian Stølevik; Limseth, Henrik Sverre & Lutken, Carsten Andrew (2018). Universality of modular symmetries in two-dimensional magneto transport. Physical review B (PRB). ISSN 2469-9950. 97(4), p. 1–20. doi: 10.1103/PhysRevB.97.045113. Full text in Research Archive

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  • Frost Nielsen, Bjarke; Linga, Gaute; Olsen, Kristian Stølevik & Simonsen, Lone (2020). Vejen til frihed. Weekendavisen. ISSN 0106-4142.
  • Olsen, Kristian Stølevik; Limseth, Henrik Sverre & Lutken, Carsten Andrew (2018). Editors 'Suggestion: Universality of modular symmetries in two-dimensional magnetotransport. Physical review B (PRB). ISSN 2469-9950. 97.
  • Olsen, Kristian Stølevik (2020). Active and Passive Brownian particles in complex enviroments . Universitetet i Oslo. ISSN 1501-7710.

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Published Feb. 14, 2018 11:32 AM - Last modified Aug. 26, 2019 3:16 PM