New integrable version of the degenerate supersymmetric t-J model

Abstract

A new integrable version of the degenerate supersymmetric t-J model is proposed. In this formulation instead of restricting single occupancy of electrons at each lattice site we may have up to two electrons at each site. As a requirement of exact integrability the hopping interaction turns out to be correlated with the density of electrons in the neighboring sites. The exact solution of the model is obtained through the coordinate Bethe anzatz.

12 pages, 3 figures

References in corpus (3)

• Doping of a spin-1 chain: integrable model
• Eight state supersymmetric $U$ model of strongly correlated fermions
• A new tow-parameter integrable model of strongly correlated electrons with quantum superalgebra symmetry

Cited by in corpus (1)

• Integrable hard rod deformation of the Heisenberg spin chains