Exact solution of new integrable nineteen-vertex models and quantum spin-1 chains
arXiv:cond-mat/9409116 · doi:10.1007/BF01313063
Abstract
New exactly solvable nineteen vertex models and related quantum spin-1 chains are solved. Partition functions, excitation energies, correlation lengths, and critical exponents are calculated. It is argued that one of the non-critical Hamiltonians is a realization of an integrable Haldane system. The finite-size spectra of the critical Hamiltonians deviate in their structure from standard predictions by conformal invariance.
16 pages, to appear in Z. Phys. B, preprint Cologne-94-4746