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Classification of string solutions of the Bethe equations in the XXZ- model of an arbitrary spin. (Russian. English summary) Zbl 0606.35070

The structure of string solutions for the XXZ Heisenberg model of arbitrary spin is studied. Special spin values are found for which there are restrictions on the positions of centers of certain string solutions. For a class of spin values depending on the anisothropy parameter such restrictions do not occur. A conjecture on the full classification of string states over the ferromagnetic vacuum is formulated.

MSC:

35Q99 Partial differential equations of mathematical physics and other areas of application
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