Physics – Condensed Matter
Scientific paper
2000-11-28
Physics
Condensed Matter
Revtex, 5 pages, no figure
Scientific paper
The well known string solution to Bethe ansatz equations is shown to be
inconsistent in its widely accepted form. A valid refinement demanding higher
order corrections in subsequent roots is identified. A new alternative string
solution is proposed for finite long chains, consistent with the non-Bethe
strings observed earlier.
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