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arXiv 1503.07885math-phcond-mat.quant-gashep-thmath.MPnlin.SInucl-th
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双格点Bose-哈伯德模型的Bethe态:二项式方法

Bethe states for the two-site Bose-Hubbard model: a binomial approach

Gilberto Santos, Changrim Ahn, Angela Foerster, Itzhak Roditi

摘要:

我们利用代数Bethe变换方法,利用$gl(2)$不变的$R$矩阵,对二格点Bose-哈伯德模型的Bethe矢量态进行了显式计算.利用两个算子之和的n次幂的二项式展开,我们得到并求解一个递归方程。我们计算了Bethe矢量态的标积和范数。还计算了不平衡电流算子的形状因子。

英文摘要:

We calculate explicitly the Bethe vectors states by the algebraic Bethe ansatz method with the $gl(2)$-invariant $R$-matrix for the two-site Bose-Hubbard model. Using a binomial expansion of the n-th power of a sum of two operators we get and solve a recursion equation. We calculate the scalar product and the norm of the Bethe vectors states. The form factors of the imbalance current operator are also computed.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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