Moving Self-Localized Modes for the Displacement Field in a One-Dimensional Lattice System with Quartic Anharmonicity
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概要
- 論文の詳細を見る
A numerical experin?ent and an analytical calculation are made to study self-local-ized modes for the displacement field of a pure one-dimensional lattice with hardquartic anharmonicity. Approximate analytical solutions are obtained for moving No-calized modes with eigenfrequencies above the top of the harmonic frequency band.The envelope of the displacement field itself is of the form of the conventional sechfunction, depending on the wave vector of carrier waves. By using approximateanalytical solutions as input, nunaerical experiments are made to explore the space-time evolution of the localized modes by taking the localized mode height and thewave vector of carrier waves as parameters. It is shown that the moving localizedmodes obtained here are identifiable as lattice solitorts under favorable conditions.self-localized mode, lattice vibration, soliton, nunverical experiment
- 社団法人日本物理学会の論文
- 1992-07-15
著者
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Hori Kazunari
Graduate School Major Of Materials Science Kyoto Institute Of Technology
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Takeno Shozo
Physics Laboratory Faculty Of Engineering And Desigh Kyoto Institute Of Technology
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