The O(D,D) Geometry of String Theory

Add to your list(s) Download to your calendar using vCal

• Emanuel Malek
• Wednesday 06 November 2013, 16:15-17:15
• CMS, Potter Room (B1.19) .

If you have a question about this talk, please contact Alasdair Routh.

I will briefly review the T-duality of string theory and how double field theory gives a manifestly T-duality invariant action for 10-d SUGRA at the cost of introducing new coordinates related to the winding modes 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 symmetries into a generalised Lie derivative. In order to define a covariant derivative with respect to this Lie derivative requires a new geometry which can be built using a flat but torsionful connection. The geometric information 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 using the Scherk-Schwarz procedure.

This talk is part of the HEP/GR Informal Seminar Series for Graduate Students series.

This talk is included in these lists:

• CMS, Potter Room (B1.19)
• Cosmology, Astrophysics and General Relativity

Note that ex-directory lists are not shown.