Type IIA AdS4 compactifications on cosets, interpolations and domain walls

Details Type IIA AdS4 compactifications on cosets, interpolations and domain walls Type IIA AdS4 compactifications on cosets, interpolations and domain walls

2008-04-04

arxiv.org/abs/0804.0614v2

JHEP 0807:017,2008

Physics

High Energy Physics

High Energy Physics - Theory

39 pages, 4 figures, 4 tables; v2: added reference, corrected eqs. (4.12)-(4.14) and (4.25)-(4.27)

Scientific paper

10.1088/1126-6708/2008/07/017

We present a classification of a large class of type IIA N=1 supersymmetric compactifications to AdS4, based on left-invariant SU(3)-structures on coset spaces. In the absence of sources the parameter spaces of all cosets leading to a solution contain regions corresponding to nearly-Kaehler structure. I.e. all these cosets can be viewed as deformations of nearly-Kaehler manifolds. Allowing for (smeared) six-brane/orientifold sources we obtain more possibilities. In the second part of the paper, we use a simple ansatz, which can be applied to all six-dimensional coset manifolds considered here, to construct explicit thick domain wall solutions separating two AdS4 vacua of different radii. We also consider smooth interpolations between AdS4 x M6 and R^{1,2} x M7, where M6 is a nearly-Kaehler manifold and M7 is the G2-holonomy cone over M6.

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