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arXiv · 1704.08665

Stringy AdS3 from the Worldsheet

Matthias R. Gaberdiel·Rajesh Gopakumar·Chris Hull
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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 sl(2,R)$_k$ 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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Matthias R. Gaberdiel, Rajesh Gopakumar, Chris Hull. 2017-04-27. Stringy AdS3 from the Worldsheet. https://doi.org/10.1007/jhep07(2017)090

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