Abstract
Recently Kazakov, Vieira and the author conjectured the Y-system set of equations describing the planar spectrum of AdS/CFT. In this paper we solve the Y-system equations in the strong coupling scaling limit. We show that the quasi-classical spectrum of string moving inside AdS 3 × S 1 matches precisely with the prediction of the Y-system. Thus the Y-system, unlike the asymptotic Bethe ansatz, describes correctly the spectrum of one-loop string energies including all exponential finite size corrections. This gives a very non-trivial further support in favor of the conjecture.
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Gromov, N. Y-system and quasi-classical strings. J. High Energ. Phys. 2010, 112 (2010). https://doi.org/10.1007/JHEP01(2010)112
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DOI: https://doi.org/10.1007/JHEP01(2010)112