2010/06/30 by Olaf Hohm, Chris Hull, Barton Zwiebach · 1 citation
Physics and Astronomy · #hep-th
paper · pdf · doi:10.1007/jhep08(2010)008
published as JHEP 1008:008,2010 · 36 pages, v2: minor corrections
arxiv created 2010/08/10 · arxiv updated 2014/11/21
The generalized metric is a T-duality covariant symmetric matrix constructed from the metric and two-form 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 T-duality 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.