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On Lagrangians and Gaugings of Maximal Supergravities | Bernard de Wit
; Henning Samtleben
; Mario Trigiante
; | Date: |
19 Dec 2002 | Journal: | Nucl.Phys. B655 (2003) 93-126 DOI: 10.1016/S0550-3213(03)00059-2 | Subject: | hep-th | Abstract: | A consistent gauging of maximal supergravity requires that the T-tensor transforms according to a specific representation of the duality group. The analysis of viable gaugings is thus amenable to group-theoretical analysis, which we explain and exploit for a large variety of gaugings. We discuss the subtleties in four spacetime dimensions, where the ungauged Lagrangians are not unique and encoded in an E_7(7)Sp(56,R)/GL(28) matrix. Here we define the T-tensor and derive all relevant identities in full generality. We present a large number of examples in d=4,5 spacetime dimensions which include non-semisimple gaugings of the type arising in (multiple) Scherk-Schwarz reductions. We also present some general background material on the latter as well as some group-theoretical results which are necessary for using computer algebra. | Source: | arXiv, hep-th/0212239 | Services: | Forum | Review | PDF | Favorites |
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