摘要
利用多重尺度结合准离散近似计算β－ＦＰＵ链，得出了非线性薛定谔方程．计算结果表明：在β－ＦＰＵ链中有包络孤子，从理论上解释了ＦＰＵ的回归问题．
Using multiple scales method combined with a quasidiscreteness approximation, we obtain nonlinear Schrodinger equation by calculating the β-FPU chain. It is showed that there is envelope soliton in the β-FPU chain, therefore, the results explain the problem of FPU in the theory.
出处
《哈尔滨理工大学学报》
CAS
2000年第6期4-6,共3页
Journal of Harbin University of Science and Technology
关键词
多重尺度法
准离散近似
β-FPU链
包络孤子
multiple scales method, quasidiscreteness approximation calculate, β-FPU chain
envelope soliton
