We present a non-supersymmetric compactification of M-theory down to seven dimensions which is close to a stable non-supersymmetric vacuum. This compactification is dual to a non-supersymmetric interacting conformal field theory in six dimensions. We argue that a given classical compactification of M-theory or string theory is close to a stable vacuum if it is dual to a conformal field theory w...

The geometry of N=1 supersymmetric double field theory is revisited in superspace. In order to maintain the constraints on torsion tensor, local tangent space group O(D) x must be expanded include a tower higher dimension generators. These generator irreducible hook representation Lorentz group, which gauges shift symmetry (or ambiguity) spin connection. This gauging possible even purely bosoni...