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Exact solution of the one-dimensional Hubbard model with arbitrary boundary magnetic fields

The one-dimensional Hubbard model with arbitrary boundary magnetic fields is solved exactly via the Bethe ansatz methods. With the coordinate Bethe ansatz in the charge sector, the second eigenvalue problem associated with the spin sector is constructed. It is shown that the second eigenvalue problem can be transformed into that of the inhomogeneous XXX spin chain with arbitrary boundary fields which can be solved via the off-diagonal Bethe ansatz method.

preprint2013arXivOpen access
Yuan-Yuan LiJunpeng CaoWen-Li YangKangjie ShiYupeng Wang
cond-mat.str-elmath-phmath.MPhep-th
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Yuan-Yuan LiJunpeng CaoWen-Li YangKangjie ShiYupeng Wang

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