New boundary conditions for (extended) ${\mathrm{AdS}}_3$ supergravity

Abstract

In this work, we build the most general boundary conditions for $\mathcal{N}=\left(1,1\right)$ and $\mathcal{N}=\left(2,2\right)$ extended supergravity. We show that for the loosest set of boundary conditions, their asymptotic symmetry algebras are two copies of the $\mathfrak{osp}{\left(1\mid 2\right)}_k$ and $\mathfrak{osp}{\left(2\mid 2\right)}_k$ algebra, respectively. Then, we restrict the gauge fields on the boundary conditions in order to obtain supersymmetric extensions of the Brown-Henneaux and Troessaert boundary conditions. Furthermore, for $\mathcal{N}=1$ and $\mathcal{N}=2$ (extended) supergravity we show the supersymmetric extensions of Avery-Poojary-Suryanarayana boundary conditions.

Added references, corrected typos