Fig. 1.

(A) Illustration of the SPV model, where cells are represented by polygons obtained via a Voronoi tessellation of initially random cell positions, with a self-propulsion force applied at each cell position. (B) Phase diagram in the $(P_0,v_0)$ plane based on the value of the shape parameter $q$ (color scale), with the phase boundary (red crosses) determined by $q=3.813$.