Vidar Skogvoll

• Skogvoll, Vidar; Salvalaglio, Marco & Angheluta, Luiza (2022). Hydrodynamic phase field crystal approach to interfaces, dislocations, and multi-grain networks. Modelling and Simulation in Materials Science and Engineering. ISSN 0965-0393. 30(8). doi: 10.1088/1361-651X/ac9493.
• Skogvoll, Vidar; Angheluta, Luiza; Skaugen, Audun; Salvalaglio, Marco & Viñals, Jorge (2022). A phase field crystal theory of the kinematics of dislocation lines. Journal of the Mechanics and Physics of Solids. ISSN 0022-5096. 166, p. 1–19. doi: 10.1016/j.jmps.2022.104932. Full text in Research Archive
• Skogvoll, Vidar; Skaugen, Audun & Angheluta, Luiza (2021). Stress in ordered systems: Ginzburg-Landau-type density field theory. Physical review B (PRB). ISSN 2469-9950. 103(22). doi: 10.1103/PhysRevB.103.224107. Full text in Research Archive
• Skogvoll, Vidar; Skaugen, Audun; Angheluta, Luiza & Viñals, Jorge (2021). Dislocation nucleation in the phase-field crystal model. Physical review B (PRB). ISSN 2469-9950. 103(1), p. 014107-1–014107-8. doi: 10.1103/PhysRevB.103.014107. Full text in Research Archive
• Skogvoll, Vidar & Liabøtrø, Ola (2017). Composite fermion basis for M-component Bose gases. Journal of Physics A: Mathematical and Theoretical. ISSN 1751-8113. 50(40). doi: 10.1088/1751-8121/aa85f7.

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• Delsett, Lene Liebe; Skogvoll, Vidar; Kline, Simon Hasselø & Jemterud, Torkild (2023). Abels tårn 18. august. [Radio]. NRK P2.
• Storehaug, Ida Torkjellsdatter & Skogvoll, Vidar (2023). God Fysikk: Av entropi er du kommet til mer entropi skal du bli, med Vidar Skogvoll. Show summary

  Entropi er kilden til liv, og universets endelige død. Det får bokstavelig talt tida til å gå. Men hva er det? I denne episoden går Ida Storehaug og Vidar Skogvoll ved Fysisk Institutt gjennom tre definisjoner av entropi. Vi følger vitenskapshistorien fra dampmaskiner til kvantedatamaskiner, og ender i noen filosofiske betraktninger om tidas natur. Her følger en episode med høy entropi!

• Joner, Erik; Vestre, Katharina; Skogvoll, Vidar & Jemterud, Torkild (2022). Abels tårn. [Radio]. Radio P2.
• Skogvoll, Vidar (2019). The Phase-field Crystal.
• Skogvoll, Vidar (2017). Three M-Species Generalizations for Rotating Bose Gases in the Lowest Landau Level. Universitetet i Oslo. Show summary

  We generalize three known theoretical results from 1- and 2-species systems to an M-component rotating Bose gas in the lowest Landau level (LLL). First, we find a subspace of the Hilbert space which is closed under homogeneous interaction and diagonalize analytically within this subspace to find the eigenenergies. This is a straight-forward generalization of Ref. [1] from 2 to M species. Second, we state and prove the validity of a basis for a particular class of composite fermion (CF) trial wave functions, known as "simple states" [2], for M-component Bose gases. By doing so, we generalize the simple state basis for 2-component Bose gases found in Ref. [3]. The number of basis elements in the M -component basis is linked to a certain class of combinatorial polynomials called q-multinomials. The proof of the M-component basis has been condensed into an article [4] and is currently under consideration by Journal of Physics A. Third, we have developed numerical tools to study the properties of the CF formalism applied to M -species Bose gases in the LLL and show that the formalism is excellent in capturing the low-energy behavior of such systems for M > 2. This is a generalization of previous results [5, 6, 2], which has shown that the CF formalism is excellent when applied to 1- and 2-component Bose gases. As part of this third generalization, we show how the formalism of simple states captures a class of eigenfunctions of the homogeneous contact interaction. This can be used to effectively visualize the evolution of the ground state of N spin-1 bosons under spin-independent interaction as a function of angular momentum L (originally found in Ref. [7]) for L ≤ N .

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