A truly marginal deformation of SL(2,R) in a null direction
arXiv:hep-th/9407198 · doi:10.1016/0370-2693(94)91340-4
Abstract
We perform a marginal deformation of the SL(2,R) WZW model in a null direction. If we send the deformation parameter to infinity we obtain a linear dilaton background plus two free bosons. We show in addition that such a background can be obtained by a duality transformation of the undeformed WZW model. In the end we indicate how to generalize the given procedure.
6 pages, RI-8-94 (One reference and two footnotes added.)