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篇目详细内容 |
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【篇名】 |
Different kinds of discrete breathers in a Sine–Gordon lattice |
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【刊名】 |
Frontiers of Physics in China |
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【刊名缩写】 |
Front. Phys. China |
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【ISSN】 |
1673-3487 |
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【EISSN】 |
1673-3606 |
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【DOI】 |
10.1007/s11467-010-0019-5 |
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【出版社】 |
Higher Education Press and Springer-Verlag Berlin
Heidelberg |
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【出版年】 |
2010 |
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【卷期】 |
5
卷2期 |
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【页码】 |
199-204
页,共
6
页 |
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【作者】 |
Bin-bin Lü(吕彬彬);
Yan-ping DENG(邓艳萍);
Qiang TIAN
(田强);
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【关键词】 |
discrete breathers; quasiperiodic discrete breathers; chaotic discrete breathers; Sine–Gordon lattice |
【摘要】 |
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We study a one-dimensional Sine–Gordon lattice of anharmonic oscillators with cubic and quartic nearest-neighbor interactions, in which discrete breathers can be explicitly constructed by an exact separation of their time and space dependence. DBs can stably exist in the one-dimensional Sine–Gordon lattice no matter whether the nonlinear interaction is cubic or quartic. When a parametric driving term is introduced in the factor multiplying the harmonic part of the on-site potential of the system, we can obtain the stable quasiperiodic discrete breathers and chaotic discrete breathers by changing the amplitude of the driver. |
