Brane-Worlds Pseudo-Goldstinos

Understand

We consider a space-time with extra dimensions containing sectors, branes and bulk, that communicate only through gravitational interactions.

• In each sector, if considered separately, supersymmetry could be spontaneously broken, leading to the appearance of Goldstinos.
• However, when taken all together, only certain combinations of the latter states turn out to be true ``would be Goldstinos'', eaten by the gravitinos.
• The other (orthogonal) combinations, we call pseudo-Goldstinos, remain in the low energy spectrum.