Shake, rattle, and help each other along In classical statistical mechanics, the deterministic dynamics of a many-body system are replaced by probabilistic description. Chvykov et al. work toward similar description for nonequilibrium self-organization collectives active particles. these systems, continuously input energy drives localized fluctuations, but larger-scale ordering can emerge, such...

Granular material such as clean sand in geotechnical engineering is characterized by structured internal deformation pattern and some interesting particle arrangement patterns. This study focuses on the evolution of fraction rattling particles deviator until critical state. Numerical simulations using discrete element method reveal presence (with zero or only one contact with neighbouring parti...