From linear to non-linear SUSY and back again

Abstract

Abstract We show that couplings of the goldstino field, appearing when global supersymmetry is broken, can always be described in superspace by means of a nilpotent chiral superfield X, satisfying X 2 = 0. This applies to both F-term and D-term supersymmetry breaking, even when the supersymmetry breaking model admits a linear description.

Keywords

• Supersymmetric Effective Theories
• Supersymmetry Breaking