Thus, the integrability of the system is proved. We list the commutation relations among the elements of such monodromy matrix through the Yang-Baxter equation.

• 然后由Yang-Baxter方程给出monodromy矩阵的各矩阵元之间所满足的代数关系，利用Bethe Ansatz方法对哈密顿量进行对角化，可求出系统的本征植和本征矢量。