Active jamming: Self-propelled soft particles at high density

Silke Henkes, Yaouen Fily, M. Cristina Marchetti
2011 Physical Review E  
We study numerically the phases and dynamics of a dense collection of self-propelled particles with soft repulsive interactions in two dimensions. The model is motivated by recent in vitro experiments on confluent monolayers of migratory epithelial and endothelial cells. The phase diagram exhibits a liquid phase with giant number fluctuations at low packing fraction and high self-propulsion speed and a jammed phase at high packing fraction and low self-propulsion speed. The dynamics of the
more » ... d phase is controlled by the low frequency modes of the jammed packing.
doi:10.1103/physreve.84.040301 pmid:22181078 fatcat:dty4bu3wf5awjgmgfyfepwdtky