New integrable extension of the Hubbard chain with variable range hopping
Shuichi Murakami; Shuichi Murakami; Department of Applied Physics, Faculty of Engineering, University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-8656, Japan
Журнал:
Journal of Physics A: Mathematical and General
Дата:
1998-07-31
Аннотация:
A new integrable variant of the one-dimensional Hubbard model with variable-range correlated hopping is studied. The Hamiltonian is constructed by applying the quantum inverse scattering method on the infinite interval at zero density to the one-parameter deformation of the L-matrix of the Hubbard model. By construction, this model has symmetry in the infinite chain limit. Multiparticle eigenstates of the model are investigated by using this method.
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