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SUSY Enhancements in (0,4) Deformations of AdS_3/CFT_2

par Detournay, Stéphane ;Lapan, Joshua M.;Romo, Mauricio
Référence Journal of High Energy Physics, 1201, page (006), 1109.4186
Publication Publié, 2012

Article révisé par les pairs

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Résumé :

We discuss a marginal deformation of the SL(2,R) × SU(2) × U(1) 4 WZW model, which describes string theory on AdS 3 × S 3 × T 4, that corresponds to warping the S3 factor. This deformation breaks part of the N = (4, 4) supersymmetry of the undeformed dual CFT to N = (0, 4) supersymmetry. In the spirit of work by Giveon, Kutasov, and Seiberg, we construct the asymptotic spacetime symmetry algebra from worldsheet operators and find a restoration of (4, 4) supersymmetry at discrete values of the deformation parameter. We explain this result from various perspectives: the worldsheet, supergravity, and from the singular D1-D5 CFT. The supergravity analysis includes an asymptotic symmetry computation of the level of the affine SU(2) R-symmetry, which arises purely from B-field contributions. © SISSA 2012.