superintegrable systems versus Zoll metrics of revolution
Abstract
Koenigs constructed a family of two dimensional superintegrable (SI) models with one linear and two quadratic integrals in the momenta, shortly (1,2). More recently Matveev and Shevchishin have shown that this construction does generalize to models with one linear and two cubic integrals i.e. (1,3), up to the solution of a non-linear ordinary differential equation. Our explicit solution of this equation allowed for the construction of these SI systems and led to the proof that the systems globally defined on S2 are Zoll. We will generalize these results to the case (1,n) for any n ≥ 2. Our approach is again constructive and shows the existence, when n is odd, of metrics globally defined on S2 which are indeed Zoll (under appropriate restrictions on the parameters), while if n is even the metrics we found are never globally defined on S2, as it is already the case for the (1,2) models constructed by Koenigs.