Abstract
An analysis of the anisotropic Heisenberg model is carried out by solving the Bethe ansatz solution of the model numerically as a function of finite N. A brief introduction to the infinite chain limit is presented and the energy for a few limiting cases of the anisotropy parameter are evaluated. Numerical results for the infinite chain are given which can be compared with the case of finite increasing N. It is shown that the calculation can be extended to the case of an excited state of the model.
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Bracken, P. Numerical techniques for investigating an excited state of the anisotropic Heisenberg model. J Math Chem 19, 57–74 (1996). https://doi.org/10.1007/BF01165131
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DOI: https://doi.org/10.1007/BF01165131