Elementary excitations in the Hubbard model with boundaries
Hitoshi Asakawa; Masuo Suzuki; Hitoshi Asakawa; Department of Physics, University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113, Japan; Masuo Suzuki; Department of Physics, University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113, Japan
Журнал:
Journal of Physics A: Mathematical and General
Дата:
1997-06-07
Аннотация:
Elementary excitations in the one-dimensional Hubbard model with boundaries are discussed at the half-filling and without external magnetic fields. The energy of the present model is evaluated in the low-lying excited state, where there exist quasiparticles corresponding to elementary excitations in the charge and the spin sectors. The boundary scattering matrix of the quasiparticles is evaluated.
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