Sawado, N.; Shiiki, N.; Tanaka, S.
(Symmetry, Integrability and Geometry: Methods and Applications, 2006)
The Skyrme-Faddeev-Niemi (SFN) model which is an O(3) σ model in three dimensional space up to fourth-order in the first derivative is regarded as a low-energy effective theory of SU(2) Yang-Mills theory. One can show from ...