Integrable relativistic systems given by Hamiltonians with   momentum-spin-orbit coupling
  In the paper we investigate the evolution of the relativistic particle (massive and massless) with spin defined by Hamiltonian containing the terms with momentum-spin-orbit coupling. We integrate the corresponding Hamiltonian equations in quadratures and express their solutions in terms of elliptic functions. 
Alina Dobrogowska and Anatol Odzijewicz
math-ph math.MP