A New Family of Integrable Extended Multi-Band Hubbard Hamiltonians

Abstract

We consider exactly solvable 1D multi-band fermionic Hamiltonians, which have affine quantum group symmetry for all values of the deformation. The simplest Hamiltonian is a multi-band t − J model with vanishing spin-spin interaction, which is the affinization of an underlying XXZ model. We also find a multi-band generalization of standard t−J model Hamiltonian. 495 Mod. Phys. Lett. A 1998.13:495-503. Downloaded from www.worldscientific.com by FLINDERS UNIVERSITY LIBRARY on 02/07/15. For personal use only.