Y-system and Quasi-Classical Strings

Details Y-system and Quasi-Classical Strings Y-system and Quasi-Classical Strings

2009-10-19

arxiv.org/abs/0910.3608v3

JHEP 1001:112,2010

Physics

High Energy Physics

High Energy Physics - Theory

references added, published version

Scientific paper

10.1007/JHEP01(2010)112

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 AdS3 x S1 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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