Generalized Parallelizable Spaces from Exceptional Field Theory

Abstract

Generalized parallelizable spaces allow a unified treatment of consistent maximally supersymmetric truncations of ten- and eleven-dimensional supergravity in generalized geometry. Known examples are spheres, twisted tori and hyperboloides. They admit a generalized frame field over the coset space $M$=$G/H$ which reproduces the Lie algebra $\mathfrak{g}$ of $G$ under the generalized Lie derivative. An open problem is a systematic construction of these spaces and especially their generalized frames fields. We present a technique which applies to $\dim M$=4 for SL(5) exceptional field theory. In this paper the group manifold $G$ is identified with the extended space of the exceptional field theory. Subsequently, the section condition is solved to remove unphysical directions from the extended space. Finally, a SL(5) generalized frame field is constructed from parts of the left-invariant Maurer-Cartan form on $G$. All these steps impose conditions on $G$ and $H$.

63 pages, 1 figure, 1 table, comments welcome

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• Uplifts of maximal supergravities and transitions to non-geometric vacua