An $AdS_{3}$ Dual for Supersymmetric MHV Celestial Amplitudes

Abstract: We propose a generalisation of the Wess-Zumino-Novikov-Witten (WZNW) model, formulated on a holomorphic extension of supersymmetric three-dimensional Anti-de Sitter $\left(AdS_{3}\right)$ space, which holographically reproduces the tree-level maximally-helicity-violating (MHV) celestial amplitudes for gravitons in $\mathcal{N}=8$ supergravity and gluons in four-dimensional $\mathcal{N}=4$ supersymmetric Yang-Mills (SYM) theory.