November 26, 20182:00 pm – 3:00 pm (CDT)

## Spinor-Helicity Formalism for Massless Fields in AdS${}_4$

Speaker:

Dmitry Ponomarev (Texas A&M University)

Location:

In this talk I will suggests a natural spinor-helicity formalism for massless fields in AdS${}_4$. It is based on the standard realization of the AdS${}_4$ isometry algebra $so(3,2)$ in terms of differential operators acting on $sl(2,\mathbb{C})$ spinor variables. I will start by deriving the AdS counterpart of plane waves in flat space and then use them to evaluate simple scattering amplitudes. Finally, based on symmetry arguments I will classify all three-point amplitudes involving massless spinning fields. As in flat space, one finds that the spinorhelicity formalism allows to construct additional consistent interactions compared to approaches employing Lorentz tensors.