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Gaberdiel, Matthias R.; Gopakumar, Rajesh; Hull, Chris
The journal of high energy physics, 07/2017, Letnik: 2017, Številka: 7Journal Article
A bstract We investigate the behaviour of the bosonic string on AdS 3 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 s l 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 AdS 3 vacua.
