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28 March 2024
 
  » arxiv » 1602.7705

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Towards a world-sheet description of doubled geometry in string theory
Ioannis Bakas ; Dieter Lust ; Erik Plauschinn ;
Date 24 Feb 2016
AbstractStarting from a sigma-model for a doubled target-space geometry, we show that the number of target-space dimensions can be reduced by half through a gauging procedure. We apply this formalism to a class of backgrounds relevant for double field theory, and illustrate how choosing different gaugings leads to string-theory configurations T-dual to each other. We furthermore discuss that given a conformal doubled theory, the reduced theories are conformal as well.
As an example we consider the three-dimensional SU(2) WZW model and show that the only possible reduced backgrounds are the cigar and trumpet CFTs in two dimensions, which are indeed T-dual to each other.
Source arXiv, 1602.7705
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