Fractional dynamics of coupled oscillators with long-range interaction

Details Fractional dynamics of coupled oscillators with long-range interaction Fractional dynamics of coupled oscillators with long-range interaction

2005-12-06

arxiv.org/abs/nlin/0512013v1

Nonlinear Sciences

Pattern Formation and Solitons

34 pages, 18 figures

Scientific paper

10.1063/1.2197167

We consider one-dimensional chain of coupled linear and nonlinear oscillators with long-range power-wise interaction. The corresponding term in dynamical equations is proportional to $1/|n-m|^{\alpha+1}$. It is shown that the equation of motion in the infrared limit can be transformed into the medium equation with the Riesz fractional derivative of order $\alpha$, when $0<\alpha<2$. We consider few models of coupled oscillators and show how their synchronization can appear as a result of bifurcation, and how the corresponding solutions depend on $\alpha$. The presence of fractional derivative leads also to the occurrence of localized structures. Particular solutions for fractional time-dependent complex Ginzburg-Landau (or nonlinear Schrodinger) equation are derived. These solutions are interpreted as synchronized states and localized structures of the oscillatory medium.

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