Boundary TBA Equations for a Non-diagonal Theory

Details Boundary TBA Equations for a Non-diagonal Theory Boundary TBA Equations for a Non-diagonal Theory

1999-03-22

arxiv.org/abs/hep-th/9903191v3

Nucl.Phys. B565 (2000) 641-652

Physics

High Energy Physics

High Energy Physics - Theory

13 pages, Tex, 2 figures, revised version, added references, to be published in Nucl. Phys. B

Scientific paper

10.1016/S0550-3213(99)00569-6

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 a 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 cases. All these computations are in perfect agreement with known results.

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