Anisotropy and Strong-Coupling Effects on the Collective Mode Spectrum of Chiral Superconductors: Application to Sr${}_2$RuO${}_4$

J. A. Sauls, Hao Wu, Suk Bum Chung

Recent theories of Sr${}_2$RuO${}_4$ based on the interplay of strong interactions, spin-orbit coupling and multi-band anisotropy predict chiral or helical ground states with strong an…