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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 Perfil
	This document is a artículoDate2002
	Este documento está disponible también en : http://dx.doi.org/10.1088/1126-6708/2002/07/010
	Este documento está disponible también en : http://hdl.handle.net/10550/33343
	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.
	Andrianopoli, Laura D'Auria, Riccardo Ferrara, Sergio Lledó Barrena, María Antonia 2002 Gauging of Flat Groups in Four Dimensional Supergravity Journal of High Energy Physics 0207 010 1 12
	http://dx.doi.org/10.1088/1126-6708/2002/07/010