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- W2013918664 abstract "The authors re-examine the triplet (S=1) 'spin-wave' excitations of the exactly solvable spin-1/2 1D Hubbard chain. They indicate that a continuous spectrum exists for all couplings U. In the strong coupling U to infinity limit, the spin-wave continuum spectrum of the isotropic Heisenberg antiferromagnet is recovered, for the half-filled band. Results for the quarter-filled band are also obtained by numerical solution of a set of linear integral equations. In addition they compare the particle-hole spectrum obtained by Coll (1974) with the Stoner excitations for a spiral spin density wave Hartree-Fock theory and found good qualitative agreement." @default.
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- W2013918664 date "1982-01-30" @default.
- W2013918664 modified "2023-09-25" @default.
- W2013918664 title "On the continuum 'spin-wave' spectrum of the one-dimensional Hubbard model" @default.
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- W2013918664 doi "https://doi.org/10.1088/0022-3719/15/3/017" @default.
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