Dynamics with Low-Level Fractionality

Details Dynamics with Low-Level Fractionality Dynamics with Low-Level Fractionality

2005-11-16

arxiv.org/abs/physics/0511138v1

Physics

Classical Physics

LaTeX, 24 pages, to be published in Physica A

Scientific paper

10.1016/j.physa.2005.12.015

The notion of fractional dynamics is related to equations of motion with one or a few terms with derivatives of a fractional order. This type of equation appears in the description of chaotic dynamics, wave propagation in fractal media, and field theory. For the fractional linear oscillator the physical meaning of the derivative of order $\alpha<2$ is dissipation. In systems with many spacially coupled elements (oscillators) the fractional derivative, along the space coordinate, corresponds to a long range interaction. We discuss a method of constructing a solution using an expansion in $\epsilon=n-\alpha$ with small $\epsilon$ and positive integer $n$. The method is applied to the fractional linear and nonlinear oscillators and to fractional Ginzburg-Landau or parabolic equations.

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