Spontaneous supersymmetry breaking in non-linear sigma-models

We consider supersymmetric non-linear sigma-models coupled to matter and study the spontaneous breaking of supersymmetry with smooth onset. We can, in particular, study its effects on the spectrum of quasi-Goldstone modes of the non-linear theory. We show states much lighter than the supersymmetry breaking scale are about to appear, all of them involving quasi-Goldstone modes. (orig.)