Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2004-08-23
Fortsch.Phys.53:119-230,2005
Physics
High Energy Physics
High Energy Physics - Theory
144 pages, 12 figures, 16 tables. Based on Ph.D. thesis, to be submitted to Fortschritte der Physik. v2: references added
Scientific paper
10.1002/prop.200410192
We present a pedagogical discussion of the emergence of gauged supergravities from M-theory. First, a review of maximal supergravity and its global symmetries and supersymmetric solutions is given. Next, different procedures of dimensional reduction are explained: reductions over a torus, a group manifold and a coset manifold and reductions with a twist. Emphasis is placed on the consistency of the truncations, the resulting gaugings and the possibility to generate field equations without an action. Using these techniques, we construct a number of gauged maximal supergravities in diverse dimensions with a string or M-theory origin. One class consists of the CSO gaugings, which comprise the analytic continuations and group contractions of SO(n) gaugings. We construct the corresponding half-supersymmetric domain walls and discuss their uplift to D- and M-brane distributions. Furthermore, a number of gauged maximal supergravities are constructed that do not have an action.
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