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DY: Fachverband Dynamik und Statistische Physik

DY 45: Microswimmers (joint session BP/DY)

DY 45.3: Vortrag

Donnerstag, 23. März 2017, 11:45–12:00, ZEU 250

A microscopic field theoretical approach for active systems — •Francesco Alaimo^{1, 2}, Simon Praetorius¹, and Axel Voigt^{1, 2, 3} — ¹Institut für Wissenschaftliches Rechnen, TU Dresden, Dresden, Germany — ²Dresden Center for Computational Materials Science (DCMS), TU Dresden, Dresden, Germany — ³Center for Systems Biology Dresden (CSBD), Dresden, Germany

We consider a microscopic modeling approach for active systems. The approach extends the phase field crystal (PFC) model and allows us to describe generic properties of active systems within a continuum model. The approach is validated by reproducing results obtained with corresponding agent-based and microscopic phase field models. We consider binary collisions, collective motion and vortex formation. For larger numbers of particles we analyze the coarsening process in active crystals and identify giant number fluctuation in a cluster formation process.