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Duality and spontaneously broken supergravity in flat backgrounds

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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/10.1016/S0550-3213(02)00575-8
	Este documento está disponible también en : http://hdl.handle.net/10550/33341
	It is shown that the super Higgs mechanism that occurs in a wide class of models with vanishing cosmological constant (at the classical level) is obtained by the gauging of a flat group which must be an electric subgroup of the duality group. If the residual massive gravitinos which occur in the partial supersymmetry breaking are BPS saturated, then the flat group is nonabelian. This is so for all the models obtained by a Scherk¿Schwarz supersymmetry breaking mechanism. If gravitinos occur in long multiplets, then the flat groups may be abelian. This is the case of supersymmetry breaking by string compactifications on an orientifold T6/Z2 with non trivial brane fluxes.
	Andrianopoli, Laura D'Auria, Riccardo Ferrara, Sergio Lledó Barrena, María Antonia 2002 Duality and spontaneously broken supergravity in flat backgrounds Nuclear Physics B 640 1¿2 63 77
	http://dx.doi.org/10.1016/S0550-3213(02)00575-8