Boundary CFT spectra, OPE coefficients, and central charges are extracted for normal and ordinary boundaries of the 3D O(2) and O(3) Wilson-Fisher fixed points via fuzzy-sphere state-operator correspondence, with confirmation of positive extraordinary-log exponent alpha.
Dedushenko, Ising BCFT from fuzzy hemisphere, arXiv preprint arXiv:2407.15948 (2024)
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Numerical study of the Kane-Mele-Hubbard-Rashba model reveals ordinary, special BKT-type, and extraordinary boundary transitions enriched by topological edge states.
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