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用最小作用量原理导出了非线性Schr?dinger方程两个孤子间的相互作用它作为孤子间距△与初位相差δ的函数揭示出来,当两个孤子δπ/2时相互排斥,δ=π/2时几乎不存在相互作用;相互作用的大小随△的增大而指数地衰减.本文的结果与实验的定量比较表明两者符合甚好The interaction between solitons of the nonlinear Schr?dinger equation is derived by the least action principle approach as a function of the soliton' s separation △ and their initial relative phase δ. The equation shows that two solitons with δπ/2 repel, and there is almost no interaction when δ=π/2, and that the interaction decreases exponential-ly as △ raises. The results obtained is well consistent with that of the experiment quantitatively.
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