Universität zu Köln

Khelfa, Basma, Korbmacher, Raphael, Schadschneider, Andreas and Tordeux, Antoine ORCID: 0000-0001-5077-0327 (2022). Heterogeneity-induced lane and band formation in self-driven particle systems. Sci Rep, 12 (1). BERLIN: NATURE PORTFOLIO. ISSN 2045-2322

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Abstract

The collective motion of interacting self-driven particles describes many types of coordinated dynamics and self-organisation. Prominent examples are alignment or lane formation which can be observed alongside other ordered structures and nonuniform patterns. In this article, we investigate the effects of different types of heterogeneity in a two-species self-driven particle system. We show that heterogeneity can generically initiate segregation in the motion and identify two heterogeneity mechanisms. Longitudinal lanes parallel to the direction of motion emerge when the heterogeneity statically lies in the agent characteristics (quenched disorder). While transverse bands orthogonal to the motion direction arise from dynamic heterogeneity in the interactions (annealed disorder). In both cases, non-linear transitions occur as the heterogeneity increases, from disorder to ordered states with lane or band patterns. These generic features are observed for a first and a second order motion model and different characteristic parameters related to particle speed and size. Simulation results show that the collective dynamics occur in relatively short time intervals, persist stationary, and are partly robust against random perturbations.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Khelfa, Basma UNSPECIFIED UNSPECIFIED UNSPECIFIED Korbmacher, Raphael UNSPECIFIED UNSPECIFIED UNSPECIFIED Schadschneider, Andreas UNSPECIFIED UNSPECIFIED UNSPECIFIED Tordeux, Antoine UNSPECIFIED orcid.org/0000-0001-5077-0327 UNSPECIFIED
URN:	urn:nbn:de:hbz:38-667740
DOI:	10.1038/s41598-022-08649-4
Journal or Publication Title:	Sci Rep
Volume:	12
Number:	1
Date:	2022
Publisher:	NATURE PORTFOLIO
Place of Publication:	BERLIN
ISSN:	2045-2322
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language STATISTICAL PHYSICS; SIMULATION; RESONANCE; DYNAMICS; BEHAVIOR; PATTERN; FLOWS; MODEL Multiple languages Multidisciplinary Sciences Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/66774