99 03 19 1 v 1 2 2 M ar 1 99 9 GATC - 99 - 01 Boundary TBA Equations for a Non - diagonal Theory


We compute the boundary entropies for the allowed boundary conditions of the SU (2)-invariant principal chiral model at level k = 1. We used the reflection factors determined in ref.[27]. As a by-product we obtain some miscellaneous results such as the ground-state energy for mixed boundary conditions as well as the degeneracies of the Kondo model in the… (More)


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