Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2009-01-06
JHEP 0904:102,2009
Physics
High Energy Physics
High Energy Physics - Theory
33 pages. v2: Added section on skew-whiffed solutions and some brief comments on holographic superconductors. v3: typos correc
Scientific paper
10.1088/1126-6708/2009/04/102
We construct consistent Kaluza--Klein reductions of D=11 supergravity to four dimensions using an arbitrary seven-dimensional Sasaki--Einstein manifold. At the level of bosonic fields, we extend the known reduction, which leads to minimal N=2 gauged supergravity, to also include a multiplet of massive fields, containing the breathing mode of the Sasaki--Einstein space, and still consistent with N=2 supersymmetry. In the context of flux compactifications, the Sasaki--Einstein reductions are generalizations of type IIA SU(3)-structure reductions which include both metric and form-field flux and lead to a massive universal tensor multiplet. We carry out a similar analysis for an arbitrary weak G_2 manifold leading to an N=1 supergravity with massive fields. The straightforward extension of our results to the case of the seven-sphere would imply that there is a four-dimensional Lagrangian with N=8 supersymmetry containing both massless and massive spin two fields. We use our results to construct solutions of M-theory with non-relativistic conformal symmetry.
Gauntlett Jerome P.
Kim Seok
Varela Oscar
Waldram Daniel
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