Article
Superfluid black branes in AdS4 × S7
Journal of High Energy Physics (Impact Factor: 5.62). 01/2011; 2011(6):133. DOI: 10.1007/JHEP06(2011)053

Article: TriSasakian consistent reduction
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ABSTRACT: We establish a universal consistent KaluzaKlein truncation of Mtheory based on sevendimensional triSasakian structure. The fourdimensional truncated theory is an N=4 gauged supergravity with three vector multiplets and a nonabelian gauge group, containing the compact factor SO(3). Consistency follows from the fact that our truncation takes exactly the same form as a leftinvariant reduction on a specific coset manifold, and we show that the same holds for the various universal consistent truncations recently put forward in the literature. We describe how the global symmetry group SL(2,R) x SO(6,3) is embedded in the symmetry group E7(7) of maximally supersymmetric reductions, and make the connection with the approach of Exceptional Generalized Geometry. Vacuum AdS4 solutions spontaneously break the amount of supersymmetry from N=4 to N=3,1 or 0, and the spectrum contains massive modes. We find a subtruncation to minimal N=3 gauged supergravity as well as an N=1 subtruncation to the SO(3)invariant sector. We also show that a reduction on the homogeneous space N^{010} enhances the universal triSasakian truncation with a Betti vector multiplet.Journal of High Energy Physics 10/2011; · 5.62 Impact Factor 
Article: A soliton menagerie in AdS
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ABSTRACT: We explore the behaviour of charged scalar solitons in asymptotically global AdS4 spacetimes. This is motivated in part by attempting to identify under what circumstances such objects can become large relative to the AdS length scale. We demonstrate that such solitons generically do get large and in fact in the planar limit smoothly connect up with the zero temperature limit of planar scalar hair black holes. In particular, for given Lagrangian parameters we encounter multiple branches of solitons: some which are perturbatively connected to the AdS vacuum and surprisingly, some which are not. We explore the phase space of solutions by tuning the charge of the scalar field and changing scalar boundary conditions at AdS asymptopia, finding intriguing critical behaviour as a function of these parameters. We demonstrate these features not only for phenomenologically motivated gravitational AbelianHiggs models, but also for models that can be consistently embedded into eleven dimensional supergravity.Journal of High Energy Physics 12/2011; 2012(5). · 5.62 Impact Factor  [Show abstract] [Hide abstract]
ABSTRACT: We describe recent developments regarding gauged N=8 supergravity in D=4. Using the embedding tensor formulation we show how to classify all the extrema of this theory with a G2 residual gauge symmetry. Our classification contains all the vacua of the recently discovered family of SO(8) gauged maximal supergravities.01/2013;
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