2017/04/30 by N. Cribiori, G. Dall'Agata, F. Farakos · 1 citation
Physics and Astronomy · #hep-th #hep-ph
paper · pdf · doi:10.1007/jhep08(2017)117
25 pages, references added, new discussion on spontaneous R-symmetry breaking added, version accepted in JHEP
arxiv created 2017/08/23 · arxiv updated 2017/09/13
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 X2=0. This applies to both F-term and D-term supersymmetry breaking, even when the supersymmetry breaking model admits a linear description.