Coset approach to the partial breaking of global supersymmetry

Understand

We propose a method to construct on-shell component actions for theories with 1/2 partial breaking of global supersymmetry within the nonlinear realization (coset) approach.

• In contrast with the standard superfield approach in which unbroken supersymmetry plays the leading role, we have shifted the attention to the spontaneously broken supersymmetry.
• It turns out that in theories in which half of supersymmetries is spontaneously broken, all physical fermions are just the fermions of the nonlinear realization.
• Moreover, transformation properties of these fermions with respect to broken supersymmetry are the same as in the Volkov-Akulov model.