11 research outputs found
Super-Ehlers in Any Dimension
We classify the enhanced helicity symmetry of the Ehlers group to extended
supergravity theories in any dimension. The vanishing character of the
pseudo-Riemannian cosets occurring in this analysis is explained in terms of
Poincar\'e duality. The latter resides in the nature of regularly embedded
quotient subgroups which are non-compact rank preserving.Comment: 1+55 pages; 15 Tables, 6 Figures; v2 : some clarifications added in
Sec. 1 and in App.