| 计及次近邻作用时一维格子的非线性元激发 |
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| 引用本文： | 冯培成,唐翌,王登龙.计及次近邻作用时一维格子的非线性元激发[J].物理学报,2001,50(6):1110-1114. |
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| 作者姓名： | 冯培成 唐翌 王登龙 |
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| 作者单位： | (1)湘潭大学物理系,湖南411105; (2)湘潭大学物理系,湖南411105;零陵师专物理系,湖南425006 |
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| 基金项目： | 国家自然科学基金(批准号:59871044和10005007);湖南省自然科学基金(批准号:OOJJY2007)资助的课题. |
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| 摘 要： | 同时考虑次近邻谐振相互作用和三次方、四次方非谐相互作用,利用多重尺度结合准离散近似方法去计算晶格振动行为,发现一维非线性点阵中存在包络孤子及正扭结型包络孤子、反扭结型包络孤子,解释了自局域结构的幅度只取决于点阵中的固有参数的实验现象
关键词：
非线性点阵
非谐相互作用
扭结型包络孤子
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| 关 键 词： | 非线性点阵 非谐相互作用 扭结型包络孤子 |
| 收稿时间： | 6/9/2000 12:00:00 AM |
| 修稿时间： | 2000年6月9日 |
NONLINEAR ELEMENTARY EXCITATION IN ONE-DIMENSIONAL LATTICE WITH SECOND NEAREST-NEIGHBOR INTERACTION |
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| FENG PEI-CHENG,WANG DENG-LONG and TANG YI.NONLINEAR ELEMENTARY EXCITATION IN ONE-DIMENSIONAL LATTICE WITH SECOND NEAREST-NEIGHBOR INTERACTION[J].Acta Physica Sinica,2001,50(6):1110-1114. |
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| Authors: | FENG PEI-CHENG WANG DENG-LONG and TANG YI |
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| Abstract: | Considering the second nearest-neighbor interaction and cubic,quartic anharmonic interactions simultaneously, we employ the multiple scales method combined with a quasidiscreteness approximation to calculate the lattice vibration.It is shown that the kind of nonlinear chain exhibits envelope soliton,envelope kink and envelope antikink soliton.These results can also be used to explain the experimental phenomena that the kink amplitude of the self-localized structure is determined only by the intrinsic properties of its lattices. |
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| Keywords: | nonlinear lattices anharmonic interaction envelope kink soliton |
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