Generalized one-dimensional Hubbard model beyond nearest neighbour approximation

C. Dziurzik, A. Schadschneider, J. Zittartz

Vladimir I. Litvinov

E. Marsch, W.‐H. Steeb, D. Grensing

The Hubbard model is investigated within the Hartree-Fock approximation for the linear chain where nearest and second-nearest-neighbour hopping is taken into account.

Feng Pan, Jerry Paul Draayer

Exact algebraic solutions of a one-dimensional finite-chain hard-core Bose-Hubbard model with nearest-neighbour interactions, which is related to a state-dependent nuclear pairing interaction with a nearest-state interaction approximation, are derived based on a simple algebraic approach. Further extensions to arbitrary spin cases and the corresponding Fermi-Hubbard model are also presented.

Florian Gebhard

P. Gluck