Dresden 2020 – scientific programme
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DY: Fachverband Dynamik und Statistische Physik
DY 67: Active Matter V (joint session DY/BP/CPP)
DY 67.3: Talk
Friday, March 20, 2020, 10:30–10:45, ZEU 160
Active Brownian particles show motility-induced spatially periodic patterns — •Samuel Grimm1, Andreas Fischer2, Thomas Speck2, and Walter Zimmermann1 — 1Theoretische Physik I, Universität Bayreuth, 95440 Bayreuth, Germany — 2Physics Institute, University of Mainz, 55099 Mainz, Germany
We suggest and investigate a model for active Brownian particles, that shows motility induced pattern formation. We complement a model of motility induced phase separation (MIPS) [J. Chem. Phys. 142, 224149 (2015)] by the dynamics of auto-inducer molecules. This results in a prototype model for spatially periodic patterns under conservation constraints, here the conservation of Brownian particles. By increasing the chemotactic sensitivity of active Brownian particles a transition from MIPS to motility induced periodic patterns takes place. They are found in a wide parameter range. Besides the phase diagrams for the onset of spatially periodic patterns also their nonlinear behavior beyond onset is investigated for selected parameter ranges.