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DY: Fachverband Dynamik und Statistische Physik

DY 42: Poster: Active Matter, Soft Matter, Fluids

DY 42.15: Poster

Thursday, March 30, 2023, 13:00–16:00, P1

Phase Behaviour of a Minimal Lattice Model with Chiral Interactions — •Boyi Wang1,2, Patrick Pietzonka1, and Frank Jülicher1,31Max Planck Institute for the Physics of Complex Systems, Dresden, Germany — 2Institute of Physics, Chinese Academy of Sciences, Beijing, China — 3Cluster of Excellence, Physics of Life, TU Dresden, Dresden, Germany

We introduce chiral interactions to a minimal lattice model based on the Ising model, adding second neighbour interactions that favour an L-shaped structure. We run Monte-Carlo simulations in equilibrium at low temperatures, and find two new ground states which exhibit chiral periodic tiling. We also study the phase behabiour analytically as a function of the strength of the chiral interaction and the external magnetic field. With number conservation, we observe the coexistence of chiral and achiral phases and the formation of droplets. Furthermore, we consider the role of chirality in this minimal lattice model with active driving forces.

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