The effect of cubic potentials on discrete breathers in a mixed Klein-Gordon/Fermi-Pasta-Ulam chain |
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| Authors: | Zhou Qian Lu Bin-Bin and Tian Qiang |
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| Institution: | Department of Physics, Beijing Normal University, Beijing 100875, China |
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| Abstract: | Nonlinearity has a crucial impact on the symmetry properties of dynamical systems.This paper studies a onedimensional mixed Klein-Gordon/Fermi-Pasta-Ulam diatomic chain using the expanded rotating plane-wave approximation and numerical calculations to determine the effect of cubic potentials on the symmetry properties of discrete breathers in this system.The results will be very useful to researchers in the field of numerical calculations on discrete breathers. |
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