Interpolation between Hubbard and supersymmetric t-J models. Two-parameter integrable models of correlated electrons

TL;DR

This paper introduces two new exactly solvable one-dimensional fermionic models that interpolate between the Hubbard and supersymmetric t-J models, expanding the understanding of correlated electron systems.

Contribution

The authors formulate and solve two new two-parameter integrable models that connect the Hubbard and supersymmetric t-J models.

Findings

Models are exactly solvable by Bethe-ansatz.

Models provide a continuous interpolation between Hubbard and t-J models.

Enhances understanding of correlated electron behaviors.

Abstract

Two new one-dimensional fermionic models depending on two independent parameters are formulated and solved exactly by the Bethe-ansatz method. These models connect continuously the integrable Hubbard and supersymmetric t-J models.