Plateaux Transitions from S-matrices based on SL(2,Z) Invariant Field Theories
arXiv:hep-th/9906138 · doi:10.1016/S0370-2693(99)01125-9
Abstract
A scattering scattering description is proposed for a boundary perturbation of a c=1 SL(2,Z) invariant conformal field theory. The bulk massless S-matrices are of the form of Zamolodchikov's staircase model. Using the boundary version of the thermodynamic Bethe ansatz, we show that the boundary free energy goes through a series of integer valued plateaux as a function of system size.
9 pages, 2 figures