Scattering matrix for currentcurrent deformations of the (2,2s + 1) RSOS models
Abstract
We study (2 , 2 s + 1) RSOS lattice models deformed by the currentcurrent operator. Solving the deformed Bethe ansatz equations for the model in the regime III we find explicit expressions for the ground state energy as well as for the energy, the momentum and the scattering matrix of the breatherlike excitations. In the scaling limit we get an additional confirmation to the proposal that the bilocal deformations are a lattice analogue of the T T bar perturbations of integrable massive QFTs proposed by Smirnov and Zamolodchikov.
 Publication:

Nuclear Physics B
 Pub Date:
 October 2021
 DOI:
 10.1016/j.nuclphysb.2021.115530
 arXiv:
 arXiv:2106.08632
 Bibcode:
 2021NuPhB.97115530P
 Keywords:

 High Energy Physics  Theory
 EPrint:
 doi:10.1016/j.nuclphysb.2021.115530