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arXiv · hep-th/0306276

Non-semisimple and Complex Gaugings of N=16 Supergravity

T. Fischbacher·H. Nicolai·H. Samtleben
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Abstract

Maximal and non-maximal supergravities in three dimensions allow for a large variety of semisimple (Chern-Simons) gauge groups. In this paper, we analyze non-semisimple and complex gauge groups that satisfy the pertinent consistency relations for a maximal (N=16) gauged supergravity to exist. We give a general procedure how to generate non-semisimple gauge groups from known admissible semisimple gauge groups by a singular boost within E_{8(8)}. Examples include the theories with gauge group SO(8) x T_{28} that describe the reduction of IIA/IIB supergravity on the seven-sphere. In addition, we exhibit two `strange embeddings' of the complex gauge group SO(8,C) into (real) E_{8(8)} and prove that both can be consistently gauged. We discuss the structure of the associated scalar potentials as well as their relation to those of D>3 gauged supergravities.

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T. Fischbacher, H. Nicolai, H. Samtleben. 2004-09-06. Non-semisimple and Complex Gaugings of N=16 Supergravity. https://doi.org/10.1007/s00220-004-1081-z

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