NEW N = 1 SUPERSYMMETRIC 3-DIMENSIONAL SUPERSTRING VACUA FROM U-MANIFOLDS

Abstract Making use of non-perturbative U-duality symmetries of type II strings we construct new `superstring' vacua in three dimensions with N =1 supersymmetry. This has an interpretation as compactifying formally from 13 dimensions (S-theory) on Calabi-Yau 5-folds possessing a T 3 × T 2 fibration. We describe some part of the massless multiplets, given by the Hodge spectrum, and point to a corresponding 5-brane configuration.