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

نویسنده

  • J. N. Prata
چکیده

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 underscreened and exactly screened cases. All these computations are in perfect agreement with known results.

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ar X iv : h ep - t h / 99 03 19 1 v 2 2 5 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 previous work. 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 underscreened and exactly screened ...

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تاریخ انتشار 1999