Fig. 2: Principal collective dynamic states in the hydrodynamic model.
From: Multi-scale organization in communicating active matter
The phase diagram of dominant (meta-stable) dynamic states in the \(\omega -{v}_{0}\) (signal susceptibility and motility) parameter space is shown in the lower panel g, and snapshots of corresponding numerical simulations of the hydrodynamic model, starting from a homogeneous initial density \({\rho }_{0}\) = 0.6 and random initial excitations of the signaling system are depicted in the upper panels. Colors indicate the polar orientation within the aggregates. a Active droplets (three are highlighted by white circles), b vortex states, c ring solutions, d “silent” polar bands, e streams, f polar bands with signaling activity. See Supplementary Movies 2–7. The polar relaxation rate is set to σ = 0.02, remaining parameters are given in Supplementary Note 3. White bars indicate a length of 50 units.
