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A toolbox for determining subdiffusive mechanisms
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DOI：10.1016/j.physrep.2015.01.002.png)
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Subdiffusive processes have become a field of great interest in the last decades, due to amounting experimental evidence of subdiffusive behavior in complex systems, and especially in biological systems. Different physical scenarios leading to subdiffusion differ in the details of the dynamics. These differences are what allow to theoretically reconstruct the underlying physics from the results of observations, and will be the topic of this review. We review the main statistical analyses available today to distinguish between these scenarios, categorizing them according to the relevant characteristics. We collect the available tools and statistical tests, presenting them within a broader perspective. We also consider possible complications such as the subordination of subdiffusive mechanisms. Due to the advances in single particle tracking experiments in recent years, we focus on the relevant case of where the available experimental data is scant, at the level of single trajectories. (C) 2015 Elsevier B.V. All rights reserved.
Keyword:
Anomalous diffusion
Subdiffusion
Subordination
Ergodicity
Single trajectories
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