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New Developments in the Eight Vertex Model

Klaus Fabricius·Barry M. McCoy
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Abstract

We demonstrate that the Q matrix introduced in Baxter's 1972 solution of the eight vertex model has some eigenvectors which are not eigenvectors of the spin reflection operator and conjecture a new functional equation for Q(v) which both contains the Bethe equation that gives the eigenvalues of the transfer matrix and computes the degeneracies of these eigenvalues.

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Klaus Fabricius, Barry M. McCoy. 2002-11-06. New Developments in the Eight Vertex Model. https://arxiv.org/abs/cond-mat/0207177

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