Short Strings in Three-Dimensional Anti-de Sitter Space: from Weak to Strong Coupling
Abstract
We numerically solve the conjectured Quantum Spectral Curve for strings on AdS3×S3×T4 with R--R charge from weak to strong coupling. At strong coupling, the spectrum organises into flat-space string mass levels with universal square-root scaling in the string tension at leading order, and additional Kaluza-Klein fine-splitting at subleading order. At weak coupling, the energies are determined by a nearest-neighbour Bethe Ansatz, with universal subleading corrections that are suppressed at large volume.
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