A second look at N=1 supersymmetric AdS_4 vacua of type IIA supergravity

Abstract

We show that a class of type IIA vacua recently found within the N=4 effective approach corresponds to compactification on Ads_4 \times S^3 \times S^3/Z_2^3. The results obtained using the effective method completely match the general ten-dimensional analysis for the existence of N=1 warped compactifications on Ads_4 \times M_6. In particular, we verify that the internal metric is nearly-Kahler and that for specific values of the parameters the Bianchi identity of the RR 2-form is fulfilled without sources. For another range of parameters, including the massless case, the Bianchi identity is satisfied when D6-branes are introduced. Solving the tadpole cancellation conditions in D=4 we are able to find examples of appropriate sets of branes. In the second part of this paper we describe how an example with internal space CP^3 but with non nearly-Kahler metric fits into the general analysis of flux vacua.

Latex file, 35 pages, no figures. Reference added, minor corrections added

References in corpus (4)

• Effective actions and N=1 vacuum conditions from SU(3) x SU(3) compactifications
• Nearly Kaehler Reduction
• D6-branes and torsion
• No-scale supersymmetry breaking vacua and soft terms with torsion

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