Breather-like pulses in a reduced Maxwell-Duffing model

16th International Youth Scientific School 'Actual Problems of Magnetic Resonance and its Applications'

Kazantseva, E.V.^1,2 ; Maimistov, A.I.^2,3

Joint Institute for High Temperatures, Russian Academy of Sciences, Izhorskaya 13/2, Moscow, 125412, Russia^1

National Research Nuclear University MEPhI, Kashirskoye sh., 31, Moscow, 115409, Russia^2

Moscow Institute of Physics and Technology (State University), Institutskii Per., Dolgoprudnyi 9, Moscow region 141700, Russia^3

关键词: Anharmonic oscillators;    Cubic nonlinearities;    Duffing model;    High frequency HF;    Low-frequency;    Oscillating amplitudes;    Soliton solutions;    Steady state solution;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/478/1/012012/pdf
DOI  :  10.1088/1742-6596/478/1/012012

来源: IOP

【 摘 要 】

Propagation of pulses with oscillating amplitude of the electromagnetic field (breathers) is considered in the framework of a model in which the medium is represented by anharmonic oscillators with cubic nonlinearities. Numerical simulations demonstrate that the high frequency breathers propagate as the steady-state solutions and are very robust against collisions with one-soliton solutions of this model. Evolution of low-frequency breather leads to dispersion spreading and conversion the pulse into quasiharmonic wave.