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arXiv 1605.09189math-phcond-mat.str-elhep-thmath.MP
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具有$\mathfrak{gl}(2|1)$对称性1的模型中Bethe向量的标量积。Reshetikhin公式的超级类似物

Scalar products of Bethe vectors in models with $\mathfrak{gl}(2|1)$ symmetry 1. Super-analog of Reshetikhin formula

A. Hutsalyuk, A. Liashyk, S. Z. Pakuliak, E. Ragoucy, N. A. Slavnov

摘要:

我们研究可由嵌套代数Bethe ansatz求解并具有$\mathfrak{gl}(2|1)$对称性的可积模型中Bethe向量的标积。利用Bethe向量上的单值矩阵项的多个作用的显式公式,我们得到了最一般情况下的标量积的表示。这种显式表示似乎是贝特参数分区的总和。它可用于分析涉及在壳Bethe向量的标量积。作为副产品,我们得到了一般Bethe向量的标积的行列式表示的可积模型与$\mathfrak{gl}(1|1)$对称性。

英文摘要:

We study scalar products of Bethe vectors in integrable models solvable by nested algebraic Bethe ansatz and possessing $\mathfrak{gl}(2|1)$ symmetry. Using explicit formulas of the monodromy matrix entries multiple actions onto Bethe vectors we obtain a representation for the scalar product in the most general case. This explicit representation appears to be a sum over partitions of the Bethe parameters. It can be used for the analysis of scalar products involving on-shell Bethe vectors. As a by-product, we obtain a determinant representation for the scalar products of generic Bethe vectors in integrable models with $\mathfrak{gl}(1|1)$ symmetry.

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