New Compactifications of Supergravities and Large N QCD


We construct supergravity backgrounds representing non-homogeneous compactifications of d = 10, 11 supergravities to four dimensions, which cannot be written as a direct product. The geometries are regular and approach AdS7 × S or AdS5 × S at infinity; they are generically non-supersymmetric, except in a certain “extremal” limit, where a Bogomol’nyi bound is saturated and a naked singularity appears. By using these spaces, one can construct a model of QCD that generalizes by one (or two) extra parameters a recently proposed model of QCD based on the non-extremal D4 brane. This allows for some extra freedom to circumvent some (but not all) limitations of the simplest version. August 1998 ∗ e-mail address:

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@inproceedings{Russo2008NewCO, title={New Compactifications of Supergravities and Large N QCD}, author={Jorge G. Russo}, year={2008} }