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Superstrings near the conformal boundary of $\rm AdS_3$
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abstract
We study worldsheet sphere amplitudes, in the RNS formalism, in superstring theory on $\text{AdS}_3\times X$ with pure NS-NS flux using the near-boundary approximation. By computing a number of amplitudes at low-lying spectral flow, we deduce a candidate for a dual CFT for generic $X$. Specialising to $X={\rm S^3}\times \mathbb{T}^4$ and with minimal NS-NS flux, i.e., to the tensionless limit, we explore the effect of the interaction term which we ignore in the near-boundary consideration. We show that amplitudes in the tensionless superstring theory on $\rm AdS_3\times S^3\times\mathbb{T}^4$ do not receive perturbative contributions from such an interaction term.
Forward citations
Cited by 3 Pith papers
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Tensionless strings on $AdS_3 \times S^3 \times S^3 \times S^1$
String theory on AdS3×S3×S3×S1 with two units of flux on each sphere is conjectured to equal the symmetric orbifold of two bosons and eight free fermions.
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On the CFT dual of superstring on AdS$_3$
This paper verifies, at second order in conformal perturbation theory, that the proposed marginal deformation of a symmetric orbifold CFT reproduces the residues of three-point superstring correlators on AdS3 x S3 x T4.
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Symmetric orbifold OPE from string theory
The worldsheet OPE of delta-function vertex operators in AdS3 string theory captures the longest single-cycle term of the symmetric orbifold OPE, with shorter cycles generated by screening operators.
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