Generalized metric formulation of double field theory
Abstract
The generalized metric is a Tduality covariant symmetric matrix constructed from the metric and twoform gauge field and arises in generalized geometry. We view it here as a metric on the doubled spacetime and use it to give a simple formulation with manifest Tduality of the double field theory that describes the massless sector of closed strings. The gauge transformations are written in terms of a generalized Lie derivative whose commutator algebra is defined by a double field theory extension of the Courant bracket.
 Publication:

Journal of High Energy Physics
 Pub Date:
 August 2010
 DOI:
 10.1007/JHEP08(2010)008
 arXiv:
 arXiv:1006.4823
 Bibcode:
 2010JHEP...08..008H
 Keywords:

 Gauge Symmetry;
 SpaceTime Symmetries;
 Global Symmetries;
 String Duality;
 High Energy Physics  Theory
 EPrint:
 36 pages, v2: minor corrections