Mirror thermodynamic Bethe ansatz for AdS3/CFT2
Sergey Frolov (School of Mathematics and Hamilton Mathematics Institute, Trinity College, Dublin 2, Ireland); Alessandro Sfondrini (Institute for Advanced Study, Einstein Drive, Princeton, New Jersey, 08540, USA, Dipartimento di Fisica e Astronomia, Università degli Studi di Padova, & Istituto Nazionale di Fisica Nucleare, Sezione di Padova, via Marzolo 8, Padova, 35131, Italy)
We consider superstrings on the pure-Ramond-Ramond AdS 3 × S 3 × T 4 background. Using the recently-proposed dressing factors for the worldsheet S matrix, we formulate the string hypothesis for the mirror Bethe-Yang equations, and use it to derive the canonical mirror thermodynamic Bethe ansatz (TBA) equations of the model. For the first time, these equations account for all massive and massless modes of the model, and do not resort to any limit or special kinematics. We also discuss the simplified mirror TBA equations and the Y-system of the model.