Fractal fractal dimensions of deterministic transport coefficients

Details Fractal fractal dimensions of deterministic transport coefficients Fractal fractal dimensions of deterministic transport coefficients

2003-01-27

arxiv.org/abs/nlin/0301038v1

Nonlinear Sciences

Chaotic Dynamics

16 pages (revtex) with 6 figures (postscript)

Scientific paper

10.1088/0305-4470/36/21/305

If a point particle moves chaotically through a periodic array of scatterers the associated transport coefficients are typically irregular functions under variation of control parameters. For a piecewise linear two-parameter map we analyze the structure of the associated irregular diffusion coefficient and current by numerically computing dimensions from box-counting and from the autocorrelation function of these graphs. We find that both dimensions are fractal for large parameter intervals and that both quantities are themselves fractal functions if computed locally on a uniform grid of small but finite subintervals. We furthermore show that there is a simple functional relationship between the structure of fractal fractal dimensions and the difference quotient defined on these subintervals.

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