The full phase space of a model in the Calogero-Ruijsenaars family
  We complete the recent derivation of a Ruijsenaars type system that arises as a reduction of the natural free system on the Heisenberg double of SU(n,n). The previous analysis by Marshall focused on a dense open submanifold of the reduced phase space, and here we describe the full phase space wherein Liouville integrability of the system holds by construction. 
L. Feher, T.F. Gorbe
math-ph hep-th math.MP nlin.SI