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.
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Cribiori, N., Dall’Agata, G. & Farakos, F. From linear to non-linear SUSY and back again. J. High Energ. Phys. 2017, 117 (2017). https://doi.org/10.1007/JHEP08(2017)117
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DOI: https://doi.org/10.1007/JHEP08(2017)117