Fig. 3.

(A) The coupling strength in the spin-triplet f-wave channel $\propto (2\lambda -V)/t$ is positive for most lattice parameters, heralding attractive interactions and superconductivity. (B) Idem for the subleading d-wave channel with coupling strength $\propto (\lambda -V)/t$. Hatched regions locate effective repulsive interaction in each channels.