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Gauging of Flat Groups in Four Dimensional Supergravity

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Gauging of Flat Groups in Four Dimensional Supergravity

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Andrianopoli, Laura; D'Auria, Riccardo; Ferrara, Sergio; Lledó Barrena, María Antonia

Aquest document és un/a article, creat/da en: 2002

Este documento está disponible también en : 10.1088/1126-6708/2002/07/010

We show that N=8 spontaneously broken supergravity in four dimensions obtained by Scherk-Schwarz generalized dimensional reduction can be obtained from a pure four dimensional perspective by gauging a suitable electric subgroup of E_{7,7}. Owing to the fact that there are non isomorphic choices of maximal electric subgroups of the U-duality group their gaugings give rise to inequivalent theories. This in particular shows that the Scherk-Schwarz gaugings do not fall in previous classifications of possible gauged N=8 supergravities. Gauging of flat groups appear in many examples of string compactifications in presence of brane fluxes.

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