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Chinese Physics, 2007, Vol. 16(1): 223-227    DOI: 10.1088/1009-1963/16/1/038
CONDENSED MATTER: STRUCTURAL, MECHANICAL, AND THERMAL PROPERTIES Prev   Next  

Evolution of soliton-like train in Klein--Gordon lattice system

Xia Qing-Lin(夏庆林), Yi Jian-Hong(易健宏), Peng Yuan-Dong(彭元东), Ye Tu-Ming(叶途明), Li Li-Ya(李丽娅), and Wang Hong-Zhong(王红忠)
School of Physics Science and Technology and State Key Laboratory for Powder Metallurgy, Central South University, Changsha 410083, China
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.
Keywords:  Klein--Gordon lattice system      soliton-like train      numerical calculation  
Received:  08 December 2005      Revised:  05 June 2006      Accepted manuscript online: 
PACS:  05.45.Yv (Solitons)  
  05.50.+q (Lattice theory and statistics)  
Fund: Project supported by the Natural Science Foundation of Hunan Province, China (Grant Nos 04JJ3078 and 04JJ6029).

Cite this article: 

Xia Qing-Lin(夏庆林), Yi Jian-Hong(易健宏), Peng Yuan-Dong(彭元东), Ye Tu-Ming(叶途明), Li Li-Ya(李丽娅), and Wang Hong-Zhong(王红忠) Evolution of soliton-like train in Klein--Gordon lattice system 2007 Chinese Physics 16 223

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