Off-diagonal Bethe ansatz solution of the XXX spin chain with arbitrary boundary conditions |
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| Authors: | Junpeng Cao Wen-Li Yang Kangjie Shi Yupeng Wang |
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| Institution: | 1. Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China;2. Institute of Modern Physics, Northwest University, Xian 710069, China |
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| Abstract: | Employing the off-diagonal Bethe ansatz method proposed recently by the present authors, we exactly diagonalize the XXX spin chain with arbitrary boundary fields. By constructing a functional relation between the eigenvalues of the transfer matrix and the quantum determinant, the associated T–Q relation and the Bethe ansatz equations are derived. |
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| Keywords: | Spin chain Reflection equation Bethe ansatz T&ndash Q Q relation |
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