Regular Seminar Domenico Orlando (University degli Studi di Milano Bicocca)
at: 13:30 room Huxley 503 abstract: | Negative curvature Euclidean (Hyperbolic) spaces have already been used in literature as part of eleven dimensional supergravity solutions. In particular it has been shown that they naturally appear when building expanding cosmological models. In this talk I will present M-theory solutions written as direct products of maximally symmetric spaces with hyperbolic components. These backgrounds break supersymmetry because of global effects but are still stable with respect to small scalar perturbations. They appear as near-horizon geometries for wrapped M5-branes, thus allowing for an intuitive interpretation of their stability. |