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By the method of molecular dynamics a study in the work is made of the statistical
characteristics of a quasi-breather in a model CuAu crystal. The phonon spectrum of this
model crystal, the dependences of mean-square deviation, the coefficient of variation and the
average frequency of the model quasi-breather on the time of its existence are obtained. The
statistical data analysis allows for the conclusion that the quasi-breather model solution in the
model considered (which uses the interatomic potential obtained by means of embedded atom
method (EAM)) slightly differs from the one in the corresponding exact breather.
Keywords: quasi-breather, discrete breather, nonlinear dynamics, soliton |
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