Berlin 2018 – wissenschaftliches Programm

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DY: Fachverband Dynamik und Statistische Physik

DY 52: Active Matter III (joint session DY/CPP/BP)

DY 52.2: Vortrag

Mittwoch, 14. März 2018, 15:45–16:00, BH-N 243

Giant Kovacs-Like Memory Effect for Active Particles — •Rüdiger Kürsten¹, Vladimir Sushkov², and Thomas Ihle¹ — ¹Universität Greifswald — ²Hochschule für angewandte Wissenschaften München

Dynamical properties of self-propelled particles obeying a bounded confidence rule [1] are investigated by means of kinetic theory and agent-based simulations. While memory effects are observed in disordered systems, we show that they also occur in active matter systems [2]. In particular, we find that the system exhibits a giant Kovacs-like memory effect that is much larger than predicted by a generic linear theory. Based on a separation of time scales we develop a nonlinear theory to explain this effect. We apply this theory to driven granular gases and propose further applications to spin glasses.

[1] Phys. Rev. E 90, 063315 (2014)

[2] Phys. Rev. Lett. 119, 188001 (2017)