Comment on the paper ``Bound States in the One-dimensional Hubbard Model''

Details Comment on the paper ``Bound States in the One-dimensional Hubbard Model'' Comment on the paper ``Bound States in the One-dimensional Hubbard Model''

1998-06-09

arxiv.org/abs/cond-mat/9806125v1

Physics

Condensed Matter

7 pages, revtex

Scientific paper

We comment on the preprint cond-mat/9805103 by D. Braak and N. Andrei \cite{BrAn98}. We point out that the ``new'' Bethe Ansatz equations presented in \cite{BrAn98} are identical to the Bethe equations for strings introduced by M. Takahashi for the description of thermodynamics in 1972 \cite{Takahashi72}. Some physics suggested in \cite{BrAn98} is incorrect. In particular, all former conclusions made on the basis of the string Bethe equations remain valid.

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