A new massive type IIA supergravity from compactification

We consider a more general form for eleven dimensional supersymmetry which is still compatible with on-shell superfields. This allows for the introduction of a conformal Spin(1,10) connection. In eleven dimensional Minkowski space this modification is trivial and can be removed by a field redefinition, however, upon compactification on S1 it is possible to introduce a non-trivial “Wilson line”. The resulting ten dimensional supergravity has massive 1-form and 3-form potentials and a cosmological constant. This theory does not possess a supersymmetric eight-brane soliton but it does admit a supersymmetric non-static cosmological solution.