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DY: Fachverband Dynamik und Statistische Physik

DY 32: Poster: Active Matter, Soft Matter, Fluids

DY 32.16: Poster

Wednesday, March 20, 2024, 15:00–18:00, Poster C

Kinetic Event-Chain Algorithm: Exploring mixtures of hard active and passive particles — •Nico Schaffrath, Thevashangar Sathiyanesan, Tobias Kampmann, and Jan Kierfeld — Physics Department, TU Dortmund, 44221 Dortmund, Germany

The novel cluster kinetic Monte-Carlo algorithm for active matter systems, which is based on the event-chain Monte-Carlo method, efficiently simulates systems of self-propelled hard particles. We extend this algorithm to various mixtures of active and passive particles. In doing so, we uncover the microscopic mechanism behind the enhanced diffusion of a completely symmetric passive tracer disk in a bath of active hard disks. Furthermore, our study includes a systematic exploration of the effective interaction between two large passive disks in a bath of active hard disks, along with an examination of the phase behavior of binary mixtures of active and passive hard disks.

Keywords: Event-Chain Monte-Carlo; Self-propelled particles; Kinetic Monte-Carlo