Towards a world-sheet description of doubled geometry in string theory

Ioannis Bakas, Dieter Luest, Erik Plauschinn*

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

Starting 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.
Original languageEnglish
Pages (from-to)730-747
Number of pages18
JournalFortschritte der Physik
Volume64
Issue number10
DOIs
Publication statusPublished - Oct 2016
Externally publishedYes

Keywords

  • Double field theory
  • T-duality

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