| Original Articles |
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Existence and Stability of Compact-Like Discrete Breather in Discrete One-Dimensional Monatomic Chains |
| XU Quan 1,2;TIAN Qiang2 |
| 1Scientific and Technological Office, Daqing Normal University, Daqing 1637122Department of Physics, Beijing Normal University, Beijing 100875 |
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| Cite this article: |
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XU Quan, TIAN Qiang 2007 Chin. Phys. Lett. 24 2197-2199 |
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Abstract Compact-like discrete breathers in discrete one-dimensional monatomic chains are investigated by discussing a generalized discrete one-dimensional monatomic model. It is proven that compact-like discrete breathers exist not only in soft ψ4 potential but also in hard ψ4 potential and K4 chains. The
measurements of compact-like discrete breathers' core in soft and hard ψ4 potential are determined by coupling parameter K4, while the measurements of compact-like discrete breathers' core in K4 chains are not related to coupling parameter K4. The stabilities of compact-like discrete breathers correlate closely to coupling parameter K4 and the boundary condition of lattice.
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| Keywords:
05.45.Xt
02.30.Jr
63.20.Pw
63.20.Ry
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Received: 08 May 2007
Published: 25 July 2007
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