Oceanic coastline and super-universality of percolation clusters

Jaan Kalda

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arXiv · cond-mat/0210650

Oceanic coastline and super-universality of percolation clusters

Jaan Kalda

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Abstract

New fractal subset of a rough surface, the ``oceanic coastline'', is defined. For random Gaussian surfaces with negative Hurst exponent $H<0$, ``oceanic coastlines'' are mapped to the percolation clusters of the (correlated) percolation problem. In the case of rough self-affine surfaces ($H \ge 0$), the fractal dimension of the ``oceanic coastline'' $d_c$ is calculated numerically as a function of the roughness exponent $H$ (using a novel technique of minimizing finite-size effects). For H=0, the result $d_c \approx 1.896$ coincides with the analytic value for the percolation problem (91/48), suggesting a super-universality of $d_c$ for correlated percolation problem.

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Jaan Kalda. 2003-01-24. Oceanic coastline and super-universality of percolation clusters. https://arxiv.org/abs/cond-mat/0210650

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