Uplifting non-compact gauged supergravities
arXiv:1410.8823 · doi:10.1007/JHEP02(2015)003
Abstract
We provide the M-theory uplift of de Sitter vacua of SO(5,3) and SO(4,4) gaugings of maximal supergravity in 4 dimensions. We find new non-compact backgrounds that are squashed hyperboloids with non-trivial flux for the 3-form potential. The uplift requires a new non-linear ansatz for the 11-dimensional metric and for the 3-form potential that reduces to the known one leading to the 7-sphere solution in the case of the SO(8) gauging.
28 pages. v2: font fixed and clarified some points. JHEP version