SU(N) linear spin-wave theory ( linear flavor-wave theory, multi-flavor spin wave theory) is the extension of the linear spin-wave theory. Please cite:
- Zhao-Yang Dong, Wei Wang, and Jian-Xin Li, SU(N) spin-wave theory: Application to spin-orbital Mott insulators, Physical Review B 97, 205106(2018). https://doi.org/10.1103/PhysRevB.97.205106