Izquierdo, A.A.; González León, M.A.; de la Torre Mayado, M.
(Symmetry, Integrability and Geometry: Methods and Applications, 2010)
The solitary waves of massive (1+1)-dimensional nonlinear SN-sigma models are unveiled. It is shown that the solitary waves in these systems are in one-to-one correspondence with the separatrix trajectories in the repulsive ...