Domain-wall Supergravities from Sphere Reduction

Details Domain-wall Supergravities from Sphere Reduction Domain-wall Supergravities from Sphere Reduction

1999-05-13

arxiv.org/abs/hep-th/9905096v1

Nucl.Phys.B560:230-256,1999

Physics

High Energy Physics

High Energy Physics - Theory

Latex, 29 pages

Scientific paper

10.1016/S0550-3213(99)00445-9

Kaluza-Klein sphere reductions of supergravities that admit AdS x Sphere vacuum solutions are believed to be consistent. The examples include the S^4 and S^7 reductions of eleven-dimensional supergravity, and the S^5 reduction of ten-dimensional type IIB supergravity. In this paper we provide evidence that sphere reductions of supergravities that admit instead Domain-wall x Sphere vacuum solutions are also consistent, where the background can be viewed as the near-horizon structure of a dilatonic p-brane of the theory. The resulting lower-dimensional theory is a gauged supergravity that admits a domain wall, rather than AdS, as a vacuum solution. We illustrate this consistency by taking the singular limits of certain modulus parameters, for which the original S^n compactifying spheres (n=4,5 or 7) become S^p x R^q, with p=n-q

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