Periodic, Quasiperiodic and Chaotic Discrete Breathers in a Parametrical Driven Two-Dimensional Discrete Klein-Gordon Lattice

XU Quan; TIAN Qiang; LUO Jun

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Periodic, Quasiperiodic and Chaotic Discrete Breathers in a Parametrical Driven Two-Dimensional Discrete Klein-Gordon Lattice

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@@ We study a two-dimensional lattice of anharmonic oscillators with only quartic nearest-neighbor interactions, in which discrete breathers can be explicitly constructed by an exact separation of their time and space dependence. DBs can stably exist in the two-dimensional Klein-Gordon lattice with hard on-site potential. When a parametric driving term is introduced in the factor multiplying the harmonic part of the on-site potential of the system, we can obtain the stable quasiperiodic discrete breathers and chaotic discrete breathers by changing the amplitude of the driver.

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《中国物理快报：英文版》 |2009年第4期|41-43|共3页
作者
XU Quan; TIAN Qiang; LUO Jun;
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作者单位

Department of Physics,Daqing Normal University,Daqing 163712;

Department of Physics,Beijing Normal University,Belting 100875;

Department of Physics,Beijing Normal University,Belting 100875;

School of Physics,Huazhong University of Science and Technology,Wuhan 430074;

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中图分类物理学;
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Periodic, Quasiperiodic and Chaotic Discrete Breathers in a Parametrical Driven Two-Dimensional Discrete Klein-Gordon Lattice

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