Long-wavelength instabilities in a system of interacting active particles
Statistical Mechanics
2018-03-14 v2 Soft Condensed Matter
Abstract
Based on a microscopic model, we develop a continuum description for a suspension of microscopic self propelled particles. With this continuum description we study the role of long-range interactions in destabilizing macroscopic ordered phases that are developed by short-range interactions. Long-wavelength fluctuations can destabilize both isotropic and also symmetry broken polar phase in a suspension of dipolar particles. The instabilities in a suspension of pullers (pushers) arise from splay (bend) fluctuations. Such instabilities are not seen in a suspension of quadrupolar particles.
Keywords
Cite
@article{arxiv.1709.06396,
title = {Long-wavelength instabilities in a system of interacting active particles},
author = {Zahra Fazli and Ali Najafi},
journal= {arXiv preprint arXiv:1709.06396},
year = {2018}
}
Comments
26 pages, 6 figures