Y-system, TBA and Quasi-Classical Strings in AdS4 x CP3

Details Y-system, TBA and Quasi-Classical Strings in AdS4 x CP3 Y-system, TBA and Quasi-Classical Strings in AdS4 x CP3

2009-12-24

arxiv.org/abs/0912.4911v4

JHEP 1006:088,2010

Physics

High Energy Physics

High Energy Physics - Theory

references added + minor changes; published version

Scientific paper

10.1007/JHEP06(2010)088

We study the exact spectrum of the AdS4/CFT3 duality put forward by Aharony, Bergman, Jafferis and Maldacena (ABJM). We derive thermodynamic Bethe ansatz (TBA) equations for the planar ABJM theory, starting from "mirror" asymptotic Bethe equations which we conjecture. We also propose generalization of the TBA equations for excited states. The recently proposed Y-system is completely consistent with the TBA equations for a large subsector of the theory, but should be modified in general. We find the general asymptotic infinite length solution of the Y-system, and also several solutions to all wrapping orders in the strong coupling scaling limit. To make a comparison with results obtained from string theory, we assume that the all-loop Bethe ansatz of N.G. and P. Vieira is the valid worldsheet theory description in the asymptotic regime. In this case we find complete agreement, to all orders in wrappings, between the solution of our Y-system and generic quasi-classical string spectrum in AdS3 x S.

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