Abstract
We study worldsheet sphere amplitudes, in the RNS formalism, in superstring theory on AdS3 × 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 = S3 × 𝕋4 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, under some assumptions, that amplitudes in the tensionless superstring theory on AdS3 × S3 × 𝕋4 do not receive perturbative contributions from such an interaction term.
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Acknowledgments
I thank Cassiano Daniel, Matthias Gaberdiel, Bob Knighton, Nathan McStay, Kiarash Naderi and Beat Nairz for useful discussions. I also thank Matthias Gaberdiel, Bob Knighton and Beat Nairz for comments on a draft version of the paper. I would like to specially thank Matthias Gaberdiel and Bob Knighton for invaluable and fruitful discussions that inspired this work and at various stages of this work. The work of VS is supported by a grant from the Swiss National Science Foundation. The activities of the group are more generally supported by the NCCR SwissMAP, which is also funded by the Swiss National Science Foundation.
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Sriprachyakul, V. Superstrings near the conformal boundary of AdS3. J. High Energ. Phys. 2024, 203 (2024). https://doi.org/10.1007/JHEP08(2024)203
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DOI: https://doi.org/10.1007/JHEP08(2024)203