N = 2 supersymmetric S-folds

Multi-parametric families of AdS4 vacua with various amounts of supersymmetry and residual gauge symmetry are found in the [SO (1, 1) × SO(6)] ⋉ ℝ12 maximal supergravity that arises from the reduction of type IIB supergravity on ℝ × S5. These provide natural candidates to holographically describe new strongly coupled three-dimensional CFT’s which are localised on interfaces of N = 4 super-Yang-Mills theory. One such AdS4 vacua features a symmetry enhancement to SU(2) × U(1) while preserving N = 2 super- symmetry. Fetching techniques from the E7(7) exceptional field theory, its uplift to a class of N = 2 S-folds of type IIB supergravity of the form AdS4× S1× S5 involving S-duality twists of hyperbolic type along S1 is presented.