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

Bakas, Ioannis; Lüst, Dieter und Plauschinn, Erik (2016): Towards a world-sheet description of doubled geometry in string theory. In: Fortschritte der Physik - Progress of Physics, Vol. 64, No. 10: pp. 730-747

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.

• Item Type: Journal article
• Faculties: Physics
• Subjects: 500 Science > 530 Physics
• ISSN: 0015-8208
• Language: English