自旋1/2粒子的量子DNLS模型的可积性

Integrability of a Quantum Derivative Nonlinear Schrdinger Model for Spin-1/2 Particle

导出了量子可导非线性Schr dinger模型 (DNLS)在自旋 12 粒子情况下的哈密顿量 .利用代数方法找到了此模型的量子monodromy矩阵所满足的量子Yang Baxter方程 (QYBE) ,从而证明其可积性 .

In this paper,we propose a new quantum derivative nonlinear Schrdinger model for spin-12 particles.With the help of Lax operator,we construct the monodromy matrix.It is shown that the monodromy matrix satisfies Yang-Baxter equation.Infinite conserved quantities can be obtained by expanding the monodromy matrix repecting to the spectrum parameter.