M-theory, exceptional generalised geometry and superpotentials

  title={M-theory, exceptional generalised geometry and superpotentials},
  author={Paulo Pires Pacheco and Daniel Waldram},
  journal={arXiv: High Energy Physics - Theory},
We discuss the structure of "exceptional generalised geometry" (EGG), an extension of Hitchin's generalised geometry that provides a unified geometrical description of backgrounds in eleven-dimensional supergravity. On a d-dimensional background, as first described by Hull, the action of the generalised geometrical O(d,d) symmetry group is replaced in EGG by the exceptional U-duality group E_d(d). The metric and form-field degrees of freedom combine into a single geometrical object, so that EGG… 

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