Large-$N$ holography for the self-dual integrable $\operatorname{Sp}(K)$ theory

Let $\mathcal{A}^{N,K}$ be the open string algebra obtained from the defect chiral algebra by setting the bulk operators to zero, and let $K$ be the rank parameter of the self-dual integrable $\operatorname{Sp}(K)$ theory.

Large-$N$ holography conjecture. The large $N$ limit of the open string algebra $\mathcal{A}^{N,K}$ is the celestial chiral algebra for the self-dual integrable $\operatorname{Sp}(K)$ theory, deformed by the $D5$ brane backreaction.

This identifies the large-$N$ open-string algebra with the celestial chiral algebra of the backreacted self-dual gauge theory. The source presents this as the holographic description of the decoupled $D5'$-brane system; its resolution is not established here.