The wavefunctionsfermions of STS depend not only on the original dynamical variables but also on their supersymmetric partners <math>\chi</math>. These Grassmann numbers, or fermions, represent the differentials of the wavefunctions understood as differential forms.<ref name=":6"/> The fermions are intrinsically linked to stochastic Lyapunov exponents<ref name=":Graham"/> that define the [[butterfly effect]] so that the [[Effective_field_theory|effective field theory]] for these fermions -- referred to as [[Goldstino|goldstinos]] in the context of the spontaneous TS breaking -- is a theory of the butterfly effect. Moreover, due to the gaplessness of goldstinos, this theory is a conformal field theory
