Fig. 3: Allowed color configurations.
From: A classical chiral spin liquid from chiral interactions on the pyrochlore lattice
Single-tetrahedron ground states Sχ of the chiral Hamiltonian in Eq. (1) in the color basis where the colors red, blue, green, and yellow correspond to the spin orientations u0, u1, u2, and u3 as defined in the main text, respectively.
