IIB Solutions with N>28 Killing Spinors Are Maximally Supersymmetric
Journal of High Energy Physics（2007）
Ist Nazl Fis Nucl | Univ Milano Bicocca
Abstract
We show that all IIB supergravity backgrounds which admit more than 28 Killing spinors are maximally supersymmetric. In particular, we find that for all N>28 backgrounds the supercovariant curvature vanishes, and that the quotients of maximally supersymmetric backgrounds either preserve all 32 or N<29 supersymmetries.
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NLO computations,QCD,hadronic colliders
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