New Compactifications of Supergravities and Large N QCD

Details New Compactifications of Supergravities and Large N QCD New Compactifications of Supergravities and Large N QCD

1998-08-19

arxiv.org/abs/hep-th/9808117v3

Nucl.Phys. B543 (1999) 183-197

Physics

High Energy Physics

High Energy Physics - Theory

two small misprints corrected, to appear in Nucl.Phys.B, 17 pages, harvmac

Scientific paper

10.1016/S0550-3213(98)00828-1

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 $AdS_7\times S^4$ or $AdS_5\times S^5$ 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.

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