Motility-induced phase separation, MIPS, is arguably the most well-studied collective phenomenon occurring in active matter without alignment interactions (scalar active matter). Its basic origin is simple: since self-propelled particles accumulate where they move slowly, having a propulsion speed that decreases steeply enough with density, due to collisions or chemical interactions, leads to a feedback loop that induces the formation of a dense phase. In these notes, I will discuss some of the main theoretical and computational efforts that have been made over the last decade in understanding the basic structural and dynamical properties of MIPS phase coexistence in microscopic active particle models.
@article{arxiv.2112.05024,
title = {An Introduction to Motility-Induced Phase Separation},
author = {Joakim Stenhammar},
journal= {arXiv preprint arXiv:2112.05024},
year = {2021}
}
Comments
The manuscript is adapted from lecture notes of the course "Initial Training on Theoretical Methods for Active Matter" organised by the MSCA-ITN ActiveMatter which has received funding from the EU H2020 Research and Innovation Programme under Grant Agreement No 812780