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Vacua of M-theory and string theoryby: R. Kallosh, A. Rajaraman
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AbstractWe argue that supersymmetric higher-dimension operators in the effective actions of M-theory and IIB string theory do not affect the maximally supersymmetric vacua: $adS_4× S^7$ and $adS_7× S^4$ in M-theory and $adS_5× S^5$ in IIB string theory. All these vacua are described in superspace by a fixed point with all components of supertorsion and supercurvature being supercovariantly constant. This follows from 32 unbroken supersymmetries and allows us to prove that such vacua are exact.
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