Authors: Zoltan Bajnok Omar el Deeb Paul A Pearce
Publish Date: 2015/04/15
Volume: 2015, Issue: 4, Pages: 73-
Abstract
We consider the nonunitary LeeYang minimal model mathrmmathcalMleft25right in three different finite geometries i on the interval with integrable boundary conditions labelled by the Kac labels r s = 1 1 1 2 ii on the circle with periodic boundary conditions and iii on the periodic circle including an integrable purely transmitting defect We apply φ13 integrable perturbations on the boundary and on the defect and describe the flow of the spectrum Adding a Φ13 integrable perturbation to move offcriticality in the bulk we determine the finite size spectrum of the massive scattering theory in the three geometries via Thermodynamic Bethe Ansatz TBA equations We derive these integral equations for all excitations by solving in the continuum scaling limit the TBA functional equations satisfied by the transfer matrices of the associated A4 RSOS lattice model of Forrester and Baxter in Regime III The excitations are classified in terms of m n systems The excited state TBA equations agree with the previously conjectured equations in the boundary and periodic cases In the defect case new TBA equations confirm previously conjectured transmission factorsThis article is published under an open access license Please check the Copyright Information section for details of this license and what reuse is permitted If your intended use exceeds what is permitted by the license or if you are unable to locate the licence and reuse information please contact the Rights and Permissions team
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