New $$ \mathcal{N} $$ = (0, 4) AdS3 near-horizons in Type IIB

A bstract We construct new families of $$ \mathcal{N} N = (0 , 4) AdS 3 × S 2 {\tilde{S}}^2 S ˜ 2 1 backgrounds fibred over a 2d Riemann surface in Type IIB string theory. These solutions are obtained by extracting the near-horizon limit D3-brane box configurations, consisting D3-D5-NS5 branes ending on D5?-NS5? background branes. relate our to previous CY and IIA recently constructed literature. explicit quiver CFTs associated check that central charges match holographic result. extend include D7-branes, show subclass these can be interpreted terms defect embedded 5d fixed point This is explicitly realised linking 6d domain wall asymptotes locally 6 ? solution T-dual Brandhuber-Oz vacuum.