Accelerator-Feasible N-Body Nonlinear Integrable System
  Nonlinear N-body integrable Hamiltonian systems, where N is an arbitrary number, attract the attention of mathematical physicists for the last several decades, following the discovery of some number of these systems. This paper presents a new integrable system, which can be realized in facilities such as particle accelerators. This feature makes it more attractive than many of the previous such systems with singular or unphysical forces. 
V. Danilov and S. Nagaitsev
physics.acc-ph nlin.SI