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http://hdl.handle.net/1942/30406
Title: | Non-Gaussian anomalous dynamics in systems of interacting run-and-tumble particles | Authors: | PUT, Stefanie Berx, Jonas VANDERZANDE, Carlo |
Issue Date: | 2019 | Publisher: | Source: | JOURNAL OF STATISTICAL MECHANICS-THEORY AND EXPERIMENT, 2019 (12) (Art N° 123205) | Abstract: | The motion of a tagged degree of freedom can give important insight into the interactions present in a complex environment. We investigate the dynamics of a tagged particle in two non-equilibrium systems that consist of interacting run-and-tumble particles. The first one is an exactly solvable polymer model, the second is a two-dimensional lattice model, which is studied through simulations. We find that in both cases a tagged particle shows anomalous dynamics and non-Gaussian behaviour for times below the persistence time of the run-and-tumble motion. For later times, the dynamics of the tagged monomer becomes diffusive. In the lattice model, the anomalous behaviour persists and can, for intermediate densities, be well approximated by a Laplace distribution. We attribute this behaviour to the dynamically changing environment of the tagged particle, which we argue, is an essential ingredient to observe deviations from Gaussianity. | Keywords: | active matter;Brownian motion | Document URI: | http://hdl.handle.net/1942/30406 | ISSN: | 1742-5468 | e-ISSN: | 1742-5468 | DOI: | 10.1088/1742-5468/ab4e90 | ISI #: | WOS:000510503500004 | Rights: | 2019 IOP Publishing Ltd and SISSA Medialab srl | Category: | A1 | Type: | Journal Contribution |
Appears in Collections: | Research publications |
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File | Description | Size | Format | |
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artikelJSTAT.pdf | Peer-reviewed author version | 5.91 MB | Adobe PDF | View/Open |
Put_2019_J._Stat._Mech._2019_123205.pdf Restricted Access | Published version | 2.56 MB | Adobe PDF | View/Open Request a copy |
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