Extended geometry and gauged maximal supergravity

G. ALDAZABAL; M. GRAÑA; D. MARQUES; J. A ROSABAL

JOURNAL OF HIGH ENERGY PHYSICS

SPRINGER

Año: 2013 vol. 1306 p. 46 - 79

1126-6708

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