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Extended symmetries in supergravity: the semi-simple case

By Axel Kleinschmidt and Diederik Roest

Abstract

The bosonic sector of various supergravity theories reduces to a homogeneous space G/H in three dimensions. The corresponding algebras g are simple for (half-)maximal supergravity, but can be semi-simple for other theories. We extend the existing literature on the Kac-Moody extensions of simple Lie algebras to the semi-simple case. Furthermore, we argue that for N = 2 supergravity the simple algebras have to be augmented with an su(2) factor.

Year: 2008
OAI identifier: oai:ub.rug.nl:dbi/50c7469a33c8f
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