# D-branes in AdS_3×S^3×T^4 at k=1 and their holographic duals

### Matthias R. Gaberdiel, Bob Knighton, Jakub Vošmera

Matthias R. Gaberdiel, Bob Knighton, Jakub Vošmera

**11/10/21**Published in : arXiv:2110.05509

String theory on \text{AdS}_3\times \text{S}^3\times \mathbb{T}^4 with minimal k=1 NS-NS flux can be described in terms of a free field worldsheet theory in the hybrid formalism. We construct various D-branes of this string theory and calculate their associated cylinder amplitudes. We find that these amplitudes match with the cylinder correlators of certain boundary states of the dual symmetric orbifold CFT \text{Sym}(\mathbb{T}^4), thus suggesting a direct correspondence between these boundary conditions. We also show that the disk amplitudes of these D-branes localise to those points in the worldsheet moduli space where the worldsheet disk holomorphically covers the spacetime disk.