Am. Perelomov et Ss. Roan, A NEW EXAMPLE OF N = 2 SUPERSYMMETRIC LANDAU-GINZBURG THEORIES - THE 2-RING CASE, Modern physics letters A, 8(31), 1993, pp. 2989-2999
The new example of N = 2 supersymmetric Landau-Ginzburg theories is co
nsidered when the critical values of the superpotential w(x) form the
regular two-ring configuration. It is shown that at the deformation, w
hich does not change the form of this configuration, the vacuum state
metric satisfies the equation of non-Abelian 2 x 2 Toda system.