ar X iv : h ep - t h / 07 03 25 6 v 1 2 8 M ar 2 00 7 NIKHEF / 2007 - 008 VANISHING SCALAR INVARIANT SPACETIMES IN SUPERGRAVITY
نویسنده
چکیده
We show that the higher-dimensional vanishing scalar invariant (VSI) spacetimes with fluxes and dilaton are solutions of type IIB supergravity, and we argue that they are exact solutions in string theory. We also discuss the supersymmetry properties of VSI spacetimes. [PACS: 04.20.Jb, 04.65.+e]
منابع مشابه
ar X iv : g r - qc / 0 61 10 19 v 2 1 8 D ec 2 00 6 NIKHEF / 2006 - 008 HIGHER DIMENSIONAL V SI SPACETIMES
We present the explicit metric forms for higher dimensional vanishing scalar invariant (V SI) Lorentzian spacetimes. We note that all of the V SI spacetimes belong to the higher dimensional Kundt class. We determine all of the V SI spacetimes which admit a covariantly constant null vector, and we note that in general in higher dimensions these spacetimes are of Ricci type III and Weyl type III....
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