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BPS Saturation from Null Reduction

Reinhold W. Gebert, Shun'ya Mizoguchi

hep-tharXiv:hep-th/9712078

Abstract

We show that any d-dimensional strictly stationary, asymptotically Minkowskian solution (d 4) of a null reduction of d+1-dimensional pure gravity must saturate the BPS bound provided that the KK vector field can be identified appropriately. We also argue that it is consistent with the field equations.

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