Simple and efficient methods for local structural analysis in polydisperse hard disk systems

In nonequilibrium statistical physics, quantifying the nearest (and higher-order) neighbors and free volumes of particles in many-body systems is crucial to elucidating the origin of macroscopic collective phenomena, such as glass/granular jamming transitions and various aspects of the behavior of a...

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Bibliographic Details
Published in:The Journal of chemical physics 2024-05, Vol.160 (17)
Main Authors: Mugita, Daigo, Souno, Kazuyoshi, Koyama, Hiroaki, Nakamura, Taisei, Isobe, Masaharu
Format: Article
Language:English
Subjects:
Disk drives
Jamming
Structural analysis
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Summary:In nonequilibrium statistical physics, quantifying the nearest (and higher-order) neighbors and free volumes of particles in many-body systems is crucial to elucidating the origin of macroscopic collective phenomena, such as glass/granular jamming transitions and various aspects of the behavior of active matter. However, conventional techniques (based on a fixed-distance cutoff or the Voronoi construction) have mainly been applied to equilibrated, homogeneous, and monodisperse particle systems. In this paper, we implement simple and efficient methods for local structure analysis in nonequilibrium, inhomogeneous, and polydisperse hard disk systems. We show how these novel methods can overcome the difficulties encountered by conventional techniques as well as demonstrate some applications.
ISSN:0021-9606
1089-7690
DOI:10.1063/5.0194873