Pairing of Solitons in Two-Dimensional S=1 Magnets
arXiv:0710.4557 · doi:10.1103/PhysRevLett.100.047203
Abstract
We discuss the structure of topological solitons in a general non-Heisenberg model of isotropic two-dimensional magnet with spin S=1, in the vicinity of a special point where the model symmetry is enhanced to SU(3). It is shown that upon perturbing the SU(3) symmetry, solitons with odd topological charge become unstable and bind into pairs.
4 pages, 1 figure