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The Diffusion of Passive Tracers in Laminar Shear Flow
Published on: May 1, 2018
Sequential disruption of the shortest path in critical percolation
Oliver Gschwend1, Hans J Herrmann2,3
1ETH Zürich, Computational Physics for Engineering Materials, Institute for Building Materials, Wolfgang-Pauli-Str. 27, HIT, CH-8093 Zürich, Switzerland.
Abstract:
We investigate the effect of sequentially disrupting the shortest path of percolation clusters at criticality by comparing it with the shortest alternative path. We measure the difference in length and the enclosed area between the two paths. The sequential approach allows us to study spatial correlations. We find the lengths of the segments of successively constant differences in length to be uncorrelated. Simultaneously, we study the distance between red bonds. We find the probability distributions for the enclosed areas A, the differences in length Δl, and the lengths between the red bonds l_{r} to follow power-law distributions. Using maximum likelihood estimation and extrapolation we find the exponents β=1.38±0.03 for Δl, α=1.186±0.008 for A, and δ=1.64±0.03 for the distribution of l_{r}.
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