Seminar at CPHT

 

Date:        Mercredi 11 Mars 2026

Heure: 11:00

Salle: Salle de Conférence Louis Michel

Speaker: Wenqi Ke (Minnesota University)

Title: From spin-3/2 to supergravity: an on-shell reconstruction

 

Abstract: The spin-3/2 field (the gravitino) arises as a consequence of local supersymmetry and appears as the superpartner of the graviton. This raises the converse question: can a consistent spin-3/2 theory lead to supersymmetry, and in turn require the presence of a graviton? Work from the 70s answered this in the affirmative for massless spin-3/2. In this talk, I will address the massive spin-3/2 case using the on-shell formalism, and show that interactions characteristic of spontaneously broken supergravity emerge naturally from consistency conditions such as Lorentz invariance and unitarity.