一维量子反铁磁链格点自旋对易关系与广义拉氏表示

The Spin Operator′s Commutation Relations in One Dimensional Quantum Antiferromagnetic Chains and Lagrangina Expression

以晶格自旋体系的Heisenberg模型为依据,计算了大s的极限情况下,一维量子反铁磁链转动生成元l与Neel矢量间的对易关系,求出了以广义坐标和广义动量形式表示的格点自旋间的拉氏函数密度表示.

On the basis of Heisenberg model in the crystal lattice spinning system, we have worked out the commutation relations, under the condition of capital s, between angular momentum l in one dimensional quantum antiferromagnetic chains and Neel vectors, and also deduced Lagrangina density expression about the lattice spinning in the forms of generalized coordinate and generalized momentum.