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arXiv · 2601.21992

Short Strings in Three-Dimensional Anti-de Sitter Space: from Weak to Strong Coupling

Simon Ekhammar·Nikolay Gromov·Bogdan Stefański jr·Charles Thull
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Abstract

We numerically solve the conjectured Quantum Spectral Curve for strings on AdS$_3\times$S$^3\times$T$^4$ 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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Simon Ekhammar, Nikolay Gromov, Bogdan Stefański jr, Charles Thull. 2026-01-29. Short Strings in Three-Dimensional Anti-de Sitter Space: from Weak to Strong Coupling. https://arxiv.org/abs/2601.21992

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