  It is known that in order for a supersymmetric gauge theory to be dynamically
broken a necessary but not sufficient condition is that the Witten index
$(-1)^F=n_b^0-n_f^0$ is zero. In the case the Witten index is zero it is in
general hard to distinguish between theories with or without dynamical
supersymmetry breaking. In this work we show that for a large class of theories
the cancellation of the Witten index by itself signals the formation of a quark
condensate and therefore produces dynamical supersymmetry breaking.

High Energy Physics - Phenomenology