11D Supergravity and Hidden Symmetries
Abstract
We review the structure of maximal D=11 and D=10 supergravities. Upon dimensional reduction, these theories give rise to the unique maximal supergravities in all lower spacetime dimensions D<10. In D dimensions, maximal supergravity exhibits the exceptional global symmetry group E11-D, part of which is realized as hidden symmetries and only manifest after proper dualization of the fields. We also briefly review the reformulation of D=11 supergravity as an exceptional field theory which renders the appearance of hidden symmetries manifest.
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