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arXiv 1306.0552math-phhep-thmath.MP
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SU(3)-不变模型中在壳Bethe向量与离壳Bethe向量标量积的重积分公式

Multiple integral formulae for the scalar product of on-shell and off-shell Bethe vectors in SU(3)-invariant models

M Wheeler

摘要:

研究了SU(3)不变性模型中在壳层和离壳层Bethe态的标量积S_{l,m},其中l和m表示两组Bethe根的基数.我们构造的递归关系S_{l,m}的标量积较小的尺寸,即S_{l-1,m}和S_{l,m-1}。通过求解这些递推关系,我们得到了S_{l,m}的新的重积分表达式,它的被积函数是(1 +m)\times(1 +m)行列式,并且与SU(2)标积的Slavnov行列式表达式密切相关.

英文摘要:

We study the scalar product S_{l,m} between an on-shell and an off-shell Bethe state in models with SU(3)-invariance, where l and m denote the cardinalities of the two sets of Bethe roots. We construct recursion relations relating S_{l,m} to scalar products of smaller dimension, namely S_{l-1,m} and S_{l,m-1}. Solving these recursion relations we obtain new multiple integral expressions for S_{l,m}, whose integrands are (l+m) \times (l+m) determinants, and closely related to the Slavnov determinant expression for the SU(2) scalar product.

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