A truly marginal deformation of SL(2,R) in a null direction
Stefan Forste
TL;DR
This paper explores a null-direction marginal deformation of the SL(2,R) WZW model, revealing a connection to linear dilaton backgrounds and duality transformations, and discusses potential generalizations.
Contribution
It introduces a novel null-direction marginal deformation of the SL(2,R) WZW model and demonstrates its relation to linear dilaton backgrounds via duality.
Findings
Deformation leads to linear dilaton background plus two free bosons
Duality transformation relates deformed and undeformed models
Procedure can be generalized to other models
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.
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