Abstract
We investigate the behaviour of the bosonic string on AdS3 with H-flux at stringy scales, looking in particular for a ‘tensionless’ limit in which there are massless higher spin gauge fields. We do this by revisiting the physical spectrum of the \( \mathfrak{s}\mathfrak{l}{\left(2,\ \mathbb{R}\right)}_k \) WZW model and considering the limit in which k becomes small. At k = 3 we find that there is an infinite stringy tower of massless higher spin fields which are part of a continuum of light states. This can be viewed as a novel tensionless limit, which appears to be distinct from that inferred from the symmetric orbifold description of superstring AdS3 vacua.
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ArXiv ePrint: 1704.08665
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Gaberdiel, M.R., Gopakumar, R. & Hull, C. Stringy AdS3 from the worldsheet. J. High Energ. Phys. 2017, 90 (2017). https://doi.org/10.1007/JHEP07(2017)090
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DOI: https://doi.org/10.1007/JHEP07(2017)090