Figure 4: Phase space.
The evolution of the spin state following the quench is depicted on two relevant phase spaces of the spin-1 system: the {ρ0, θs} phase space (lower left), and the {Sx, Qyz, Qzz} spin-nematic Bloch sphere (centre). The left illustration represents the initial state, while the right illustration shows the system after a finite amount of evolution. The distributions for both cases have been exaggerated for illustrative purposes. A zoom-in of the hyperbolic fixed point at the pole is shown (top) with arrows indicating the orbit directions. The ρ0, θs phase space represents a Mercator projection of one of the degenerate hemispheres.
