Nested Bethe ansatz for Perk–Schultz model with open boundary conditions Original Research Article

By using the algebraic Bethe ansatz, we find the exact solution of Perk–Schultz model with general open boundary conditions. The Bethe ansatz equation and the eigenvalue of the transfer matrix are obtained, which depends on two free parameters dominating the different grade boundary. Under the special condition m=1 , the results in present paper give the solution of multichannel t-J model with general boundary condition. Our results also recover those obtained by A. Gonzalez-Ruiz, Nucl. Phys. B 424 [FS] (1994) 468.