Celestial superamplitude in $\mathcal N=4$ SYM theory

Understand

Celestial amplitude is a new reformulation of momentum space scattering amplitude and offers a promising way for flat holography.

• In this paper, we study the celestial amplitude in $\mathcal N=4$ Super-Yang-Mills (SYM) theory aiming at understanding the role of superconformal symmetry in celestial holography.
• We first construct the superconformal generators acting on the celestial superfield which assembles all the on-shell fields in the multiplet together in terms of celestial variables and Grassmann parameters.
• These generators satisfy the superconformal algebra of $\mathcal N=4$ SYM theory.