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Unravelling the origins of anomalous diffusion

  • Anomalous diffusion or, more generally, anomalous transport, with nonlinear dependence of the mean-squared displacement on the measurement time, is ubiquitous in nature. It has been observed in processes ranging from microscopic movement of molecules to macroscopic, large-scale paths of migrating birds. Using data from multiple empirical systems, spanning 12 orders of magnitude in length and 8 orders of magnitude in time, we employ a method to detect the individual underlying origins of anomalous diffusion and transport in the data. This method decomposes anomalous transport into three primary effects: long-range correlations (“Joseph effect”), fat-tailed probability density of increments (“Noah effect”), and nonstationarity (“Moses effect”). We show that such a decomposition of real-life data allows us to infer nontrivial behavioral predictions and to resolve open questions in the fields of single-particle tracking in living cells and movement ecology.

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Author details:Ohad VilkORCiD, Erez AghionORCiD, Tal AvgarORCiD, Carsten BetaORCiDGND, Oliver NagelORCiDGND, Adal SabriGND, Raphael SarfatiORCiD, Daniel K. SchwartzORCiD, Matthias WeißGND, Diego KrapfORCiD, Ran NathanORCiD, Ralf MetzlerORCiDGND, Michael AssafORCiD
DOI:https://doi.org/10.1103/PhysRevResearch.4.033055
ISSN:2643-1564
Title of parent work (English):Physical Review Research
Subtitle (English):from molecules to migrating storks
Publisher:American Physical Society
Place of publishing:College Park, MD
Publication type:Article
Language:English
Date of first publication:2022/07/18
Publication year:2022
Release date:2023/02/07
Volume:4
Issue:3
Article number:033055
Number of pages:16
First page:033055-1
Last Page:033055-16
Funding institution:Universität Potsdam
Funding number:PA 2022_083
Organizational units:Mathematisch-Naturwissenschaftliche Fakultät / Institut für Physik und Astronomie
DDC classification:5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik
Peer review:Referiert
Grantor:Publikationsfonds der Universität Potsdam
Publishing method:Open Access / Gold Open-Access
License (German):License LogoCC-BY - Namensnennung 4.0 International
External remark:Zweitveröffentlichung in der Schriftenreihe Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe ; 1303
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