NSR String in Ads3 Backgrounds: Nonlocal Charges
Jnanadeva Maharana
Abstract
We consider NSR superstring in AdS3 X S3 X R4 background. The action is expressed in terms of the variables on the group manifolds SL(2,R) and SU(2) as 1+1 dimensional sigma models with Wess-Zumino terms, associated with AdS3 and S3 respectively. R4 is flat Euclidean space. We show the existence of classical nonlocal conserved currents in the superspace formulation for the nonlinear sigma model with the WZ term in the context of NSR string. We propose Ward identities utilizing the existence of the nonlocal conserved currents.
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