Revisiting the tensionless limit of pure-Ramond-Ramond AdS3/CFT2

We revisit the numerical solution of the mirror TBA equations for pure–Ramond-Ramond strings on $Ad{S}_3\times S^3\times T^4$ in the tensionless limit. Our analysis uses the recently-proposed modification of the dressing factors which account for non-trivial exchange relations of the massless modes. At leading order in the tension, the dynamics is driven by the massless excitations associated to $T^4$ modes and their superpartners, but it is non-relativistic and interacting unlike what happens in the symmetric-product orbifold CFT of $T^4$.