Susceptibility of Polar Flocks to Spatial Anisotropy
Susceptibility of Polar Flocks to Spatial Anisotropy
We study the effect of spatial anisotropy on polar flocks by investigating active $q$-state clock models in two dimensions. In contrast to the equilibrium case, we find that any amount of anisotropy is asymptotically relevant, drastically altering the phenomenology from that of the rotationally invariant case. All of the well-known …