Superstrings on AdS3 at k = 1

Massless sector of AdS3 superstrings: a geometric interpretation

We study the recently discovered q-deformed Poincaré supersymmetry of the AdS3/CFT2 integrable massless scattering, and demonstrate how the S-matrix is invariant under boosts. The boost generator has a non-local coproduct, which acts on the scattering matrix as a differential operator, annihilating it. We propose to reinterpret the boost action in terms of covariant derivatives on bundles, and ...

Green-Schwarz Superstrings on AdS3 and the Boundary N = 4 Superconformal Algebra

We study the hybrid formulation of Green-Schwarz superstrings on AdS3 with NS flux and the boundary N = 4 superconformal algebra. We show the equivalence between the NSR and GS superstrings by a field redefinition. The boundary N = 4 superconformal algebra is realized by the free fields of the affine Lie superalgebra A(1|1)(1). We also consider the light-cone gauge and obtain the N = 4 superLio...

Conformal symmetry of superstrings on AdS3 × S 3 × T 4 and D1/D5 system

String Theory on AdS3/ZN

We study string theory on singular ZN quotients of AdS3, corresponding to spaces with conical defects. The spectrum is computed using the orbifold procedure. It is shown that spectral flow may be used to generate the twisted sectors. We further compute the thermal partition function and show that it correctly reproduces the spectrum.

Superstrings and Topological Strings at Large N

We embed the large N Chern-Simons/topological string duality in ordinary super-strings. This corresponds to a large N duality between generalized gauge systems with N = 1 supersymmetry in 4 dimensions and superstrings propagating on non-compact Calabi-Yau manifolds with certain fluxes turned on. We also show that in a particular limit of the N = 1 gauge theory system, certain superpotential ter...