Robust Nature of Dispersionless Envelope Lattice Solitons and Their Propagation in One-Dimensional Disordered Nonlinear Lattices
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概要
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Unique properties of envelope lattice solitons with dispersionless carrier-wave frequency exhibiting a robust nature and relaxed existence conditions are elucidated. This is done for a modified version of the Ablowitz-Ladik equation defined in a d-dimensional simple cubic (SC) lattice. Two methods are used : one is analytical for the ordered SC lattice and the other, numerical for a disordered one-dimensional lattice. In the former, a localized-mode concept is employed to show the relaxed existence condition for lattices of arbitrary dimension. In the latter, numerical experiments are performed to show fairly smooth propagation of dispersionless solitons even for strongly disordered cases, where ordinary solitons with dispersive carrier-wave frequency eventually settle down to immobile localized modes.
- 社団法人日本物理学会の論文
- 1993-03-15
著者
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Takeno Shozo
Laboratory of Physics, Faculty of Engineering and Design, Kyoto Institute of Technology
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Takeno Shozo
Laboratory Of Physics Faculty Of Engineering And Design Kyoto Institute Of Technology
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Homma Shigeo
Department Of Applied Physics Faculty Of Engineering Nagoya University
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