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Gap breathers in the one-dimensional Klein-Gordon diatomic chain

Li Mi-Shan Tian Qiang

Gap breathers in the one-dimensional Klein-Gordon diatomic chain

Li Mi-Shan, Tian Qiang
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  • Abstract views:  3248
  • PDF Downloads:  931
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Publishing process
  • Received Date:  20 July 2005
  • Accepted Date:  14 May 2006
  • Published Online:  05 January 2007

Gap breathers in the one-dimensional Klein-Gordon diatomic chain

  • 1. (1)北京交通大学理学院,北京 100044; (2)北京师范大学物理系,北京 100875

Abstract: The gap breathers (GBs) in a one-dimensional Klein-Gordon diatomic chain are studied under rotating-wave approximation (RWA). The analytical investigation of heavy-particle centered symmetric mode (HS mode) has been implemented under the boundary condition of standing waves. We examine the effects of the coupling constant, nonlinear constant and the mass ratio on the GBs. The GB profiles are sensitive to the coupling constant, nonlinear constant and the mass ratio. As the coupling constant increases, the GB profiles become broader. But, with the nonlinearity and the mass ratio increasing, the GB profiles appear more localized.

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