T-duality versus Gauge Symmetry

Details T-duality versus Gauge Symmetry T-duality versus Gauge Symmetry

2011-01-18

arxiv.org/abs/1101.3484v1

Physics

High Energy Physics

High Energy Physics - Theory

10 pages, based on talk at `String Field Theory 2010', to appear in Progress of Theoretical Physics

Scientific paper

We review the recently constructed `double field theory' which introduces in addition to the conventional coordinates associated to momentum modes coordinates associated to winding modes. Thereby, T-duality becomes a global symmetry of the theory, which can be viewed as an `O(D,D) covariantization' of the low-energy effective space-time action of closed string theory. We discuss its symmetries with a special emphasis on the relation between global duality symmetries and local gauge symmetries.

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