Evolution of soliton-like train in Klein--Gordon lattice system |
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Authors: | Xia Qing-Lin Yi Jian-Hong Peng Yuan-Dong Ye Tu-Ming Li Li-Ya and Wang Hong-Zhong |
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Institution: | School of Physics Science and Technology and State Key Laboratory for Powder Metallurgy, Central South University, Changsha 410083, China |
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Abstract: | This paper studies the evolution of wave in the system of a pure
anharmonic lattice with a double well on-site potential by numerical
calculation. It finds that an initial distribution of static or
moving wave can evolve into two travelling soliton-like trains with
contrary directions and a region of oscillation in this lattice
system. It presents that some cases with cosine-square-shape and
Gaussian-shape initial distribution of static or moving wave will
produce ordered soliton-like train. Careful numerical observation
shows that the centre oscillation region in this system may act as a
resource of generating soliton-like train. |
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Keywords: | Klein--Gordon lattice system soliton-like train numerical calculation |
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