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arXiv · 1811.00038

E$_{7(7)}$ Exceptional Field Theory in Superspace

Daniel Butter·Henning Samtleben·Ergin Sezgin
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Abstract

We formulate the locally supersymmetric E$_{7(7)}$ exceptional field theory in a $(4+56|32)$ dimensional superspace, corresponding to a 4D $N\!=\!8$ "external" superspace augmented with an "internal" 56-dimensional space. This entails the unification of external diffeomorphisms and local supersymmetry transformations into superdiffeomorphisms. The solutions to the superspace Bianchi identities lead to on-shell duality equations for the $p$-form field strengths for $p\leq 4$. The reduction to component fields provides a complete description of the on-shell supersymmetric theory. As an application of our results, we perform a generalized Scherk-Schwarz reduction and obtain the superspace formulation of maximal gauged supergravity in four dimensions parametrized by an embedding tensor.

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Daniel Butter, Henning Samtleben, Ergin Sezgin. 2018-10-31. E$_{7(7)}$ Exceptional Field Theory in Superspace. https://doi.org/10.1007/jhep01(2019)087

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