Numerical simulation of the interactions of domain walls with breathers   in two-dimensional O(3) nonlinear sigma model
  By methods of numerical simulation the interaction of 180-degree domain walls with oscillating solitons in (2+1)-dimensional O(3) nonlinear sigma model is investigated. A model of the collisions in which there is observed a reflection of solitons from each other, long-range interactions, as well as the decay of the oscillating soliton are obtained. 
F. Sh. Shokirov
nlin.PS