Exact solution of A-D Temperley-Lieb Models

Details Exact solution of A-D Temperley-Lieb Models Exact solution of A-D Temperley-Lieb Models

1995-05-11

arxiv.org/abs/cond-mat/9505049v1

Physics

Condensed Matter

Scientific paper

We solve for the spectrum of quantum spin chains based on representations of the Temperley-Lieb algebra associated with the quantum groups ${\cal U}_q(X_n } for $X_n = A_1,B_n,C_n$ and $D_n$. We employ a generalization of the coordinate Bethe-Ansatz developed previously for the deformed biquadratic spin one chain. As expected, all these models have equivalent spectra, i.e. they differ only in the degeneracy of their eigenvalues. This is true for finite length and open boundary conditions. For periodic boundary conditions the spectra of the lower dimensional representations are containded entirely in the higher dimensional ones. The Bethe states are highest weight states of the quantum group, except for some states with energy zero.

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