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SUMMARY:Supergravity as generalised geometry - Waldram\, D (Imperial Colle
 ge London)
DTSTART:20120111T140000Z
DTEND:20120111T150000Z
UID:TALK35314@talks.cam.ac.uk
CONTACT:Mustapha Amrani
DESCRIPTION:We show how extensions of conventional differential geometry\,
  so called "generalised geometry"\, give a natural way of formulating type
  II and eleven-dimensional supergravity theories\, unifying the bosonic fi
 elds and symmetries. There is a natural action of the U- and T-duality gro
 ups\nE_d(d) and O(d\,d) and the formalism shows that the supergravity theo
 ries have an enhanced local symmetry.\nBy introducing the analogue of the 
 Levi-Civita connection we find that the action and equations of motion sim
 plify\, writable in terms of a generalised Ricci tensor. The connection al
 so encodes the supersymmetry variations and fermionic equations of motion.
  There are interesting implications for describing supersymmetric backgrou
 nds and connections to the embedding tensor formalism. \n\n
LOCATION:Seminar Room 1\, Newton Institute
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