Spin-1/2 operators exactly mapped to spinful canonical Fermi operators present in two bands

Zsolt Gulacsi ()
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Zsolt Gulacsi: University of Debrecen

The European Physical Journal B: Condensed Matter and Complex Systems, 2025, vol. 98, issue 7, 1-13

Abstract: Abstract 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.

Date: 2025
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DOI: 10.1140/epjb/s10051-025-00984-5

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