| Parametrically Driven Nonlinear Oscillators with an Impurity |
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| 作者姓名： | 张卓 唐翌 |
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| 作者单位： | DepartmentofPhysics,XiangtanUniversity,Xiangtan411105 |
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| 摘 要： | By virtue of the method of multiple scales,we study a chain of parametrically driven nonlinear oscillators with a mass impurity.An equation is presented to describe the nonlinear wave of small amplitude in the chain.In our derivation,the equation is applicable to any eigenmode of coupled pendulum.Our result shows that a nonpropagation soliton emerges as the lowest or highest eigenmode of coupled pendulum is excited,and the impurity tends to pin the nonpropagation soliton excitation.
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| 关 键 词： | 谐振子 非线性谐振子 振子链 |
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