Superintegrability of Geodesic Motion on the Sausage Model

G. Arutyunov, M. Heinze, D. Medina-Rincon

Reduction of the $\eta$-deformed sigma model on ${\mathrm{AdS}}_5\times {\mathrm{S}}^5$ to the two-dimensional squashed sphere $({\mathrm{S}}^2{)}_{\eta }$ can be viewed as a special case of the Fateev sau…