D-Branes in ${\text{AdS}}_3\times {\text{S}}^3\times {\text{S}}^3\times {\text{S}}^1$

Giorgio Belleri, Matthias R. Gaberdiel

String theory on ${\mathrm{AdS}}_3\times {\mathrm{S}}^3\times {\mathrm{S}}^3\times {\mathrm{S}}^1$ with two units of NS flux through each of the two $3$-spheres (and one unit of NS fl…