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SKM 2023 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 31: Topology: Majorana Physics

TT 31.9: Vortrag

Mittwoch, 29. März 2023, 11:45–12:00, HSZ 304

Interacting Majorana fermions — •Lukas Janssen1 and Urban F. P. Seifert21Technische Universität Dresden, Dresden, Germany — 2University of California, Santa Barbara, USA

I will present our study of models of interacting Majorana fermions with global SO(N) symmetry. The models can be understood as real counterparts of the SU(N) Hubbard-Heisenberg models and may be realized in Abrikosov vortex phases of topological superconductors, or in fractionalized phases of strongly frustrated spin-orbital magnets. I will describe the zero-temperature phase diagrams and discuss the natures of the occurring quantum phase transitions, with the help of mean-field, renormalization group, and quantum Monte Carlo approaches.
[1] L. Janssen and U. F. P. Seifert, Phys. Rev. B 105, 045120 (2022)

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