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New integrable extension of the Hubbard chain with variable range hopping

Shuichi Murakami
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Abstract

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 Y(su(2))$\oplus$Y(su(2)) symmetry in the infinite chain limit. Multiparticle eigenstates of the model are investigated through this method.

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Shuichi Murakami. 1998-02-06. New integrable extension of the Hubbard chain with variable range hopping. https://doi.org/10.1088/0305-4470%2F31%2F30%2F006

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