BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Talks.cam//talks.cam.ac.uk//
X-WR-CALNAME:Talks.cam
BEGIN:VEVENT
SUMMARY:The O(D\,D) Geometry of String Theory - Emanuel Malek
DTSTART:20131106T161500Z
DTEND:20131106T171500Z
UID:TALK48096@talks.cam.ac.uk
CONTACT:Alasdair Routh
DESCRIPTION:I will briefly review the T-duality of string theory and how d
 ouble field theory gives a manifestly T-duality invariant action for 10-d 
 SUGRA at the cost of introducing new coordinates related to the winding mo
 des of strings. Double field theory not only combines the NS-NS sector of 
 10-d SUGRA into a generalised metric but also combines the infinitesimal s
 ymmetries into a generalised Lie derivative. In order to define a covarian
 t derivative with respect to this Lie derivative requires a new geometry w
 hich can be built using a flat but torsionful connection. The geometric in
 formation is now fully contained in the torsion and I will show how to use
  this torsion to construct the double field theory action. If time permits
  I will discuss how this relates to the action of gauged supergravities us
 ing the Scherk-Schwarz procedure.
LOCATION:CMS\, Potter Room (B1.19) 
END:VEVENT
END:VCALENDAR