Author/Authors :
Alok Kumar، نويسنده , , Cumrun Vafa، نويسنده ,
Abstract :
We use non-perturbative U-duality symmetries of type II strings to construct new vaccum solutions. In some ways this generalizes the F-theory vacuum constructions. We find the possibilities of new vacuum constructions are very limited. Among them we construct new theories with N = 2 supersymmetry in 3 dimensions and (1, 1) supersymmetry in 2 dimensions.
