Elementary excitations in the Hubbard model with boundaries
Hitoshi Asakawa, Masuo Suzuki
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.
Journal of Physics A Mathematical and General•Jun 7, 1997•9 citations