Extended geometry and gauged maximal supergravity

Abstract : We consider generalized diffeomorphisms on an extended mega-space associated to the U-duality group of gauged maximal supergravity in four dimensions, E 7(7). Through the bein for the extended metric we derive dynamical (field-dependent) fluxes taking values in the representations allowed by supersymmetry, and obtain their quadratic constraints from gauge consistency conditions. A covariant generalized Ricci tensor is introduced, defined in terms of a connection for the generalized diffeomorphisms. We show that for any torsionless and metric-compatible generalized connection, the Ricci scalar reproduces the scalar potential of gauged maximal supergravity. We comment on how these results extend to other groups and dimensions.
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G. Aldazabal, M. Graña, D. Marqués, J. A. Rosabal. Extended geometry and gauged maximal supergravity. Journal of High Energy Physics, Springer Verlag (Germany), 2013, 2013 (6), ⟨10.1007/JHEP06(2013)046⟩. ⟨cea-01295494⟩

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