A goldstino at the bottom of the cascade

Understand

Working within a five-dimensional consistent truncation of type IIB supergravity dimensionally reduced on $T^{1,1}$, we consider supersymmetry breaking solutions with the asymptotics of the supersymmetric Klebanov-Strassler background.

• There exists a two-parameter family of such solutions.
• Within this family, we show that those (and only those) solutions related to antiD-branes at the tip of the conifold correspond to dual field theory vacua where a goldstino mode is present and supercurrent Ward identities hold.
• Our findings do not depend on the IR singularity of the dual backgrounds, nor on its resolution.