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Résumé |
Jordanian deformations offer rare integrable realisations of non-AdS holography, whose solvability
methods differ from conventional AdS/CFT examples. In this talk, I will review the construction of
Homogenous Yang-Baxter (HYB) deformations of worldsheet sigma-models, together with their
conjectured holographic gauge duals. This leads to consider Drinfel’d twisted spin chains, for which I will
present a universal treatment of their integrability. I will then single out the Jordanian HYB-deformation
and its corresponding non-compact spin chain, which displays novel features in the landscape of
integrable spin chains. I will present how to solve its spectrum, highlighting how integrability enables this
computation in an unconventional way. Finally, I will demonstrate how the chain’s spectrum matches with
the deformed string spectrum at the one-loop level and to subleading order in the long chain limit. This
provides us with the first nontrivial quantum test of Jordanian non-AdS holography. |
