https://doi.org/10.1140/epjb/s10051-025-00984-5
Regular Article - Solid State and Materials
Spin-1/2 operators exactly mapped to spinful canonical Fermi operators present in two bands
Department of Theoretical Physics, University of Debrecen, Bem ter 18/B, 4010, Debrecen, Hungary
Received:
8
April
2025
Accepted:
9
June
2025
Published online:
1
July
2025
Recently, it has been shown that the quantum spin–1/2 spin operators can be exactly transformed not only in spinless, but also in spinful canonical Fermi operators in 1D [1] and 2D [2] as well. In this paper, using the same technique based on an extended Jordan–Wigner transformation, we show in 1D that the quantum spin-1/2 operators can be exactly transformed also in spinful canonical Fermi operators of spin-1/2 fermions that are belong to two bands.
© The Author(s) 2025
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