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arXiv 1002.3387cond-mat.stat-mechcond-mat.quant-gashep-th
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Bethe矩阵元作为量子场论形状因子的非相对论极限

Bethe Ansatz Matrix Elements as Non-Relativistic Limits of Form Factors of Quantum Field Theory

M. Kormos, G. Mussardo, B. Pozsgay

摘要:

我们证明了用代数Bethe矩阵计算的可积模型的矩阵元可以直接对应于可积相对论场论的形状因子。当Bethe Ancestor模型的S-矩阵可以被看作是场论的S-矩阵的一个合适的非相对论极限,并且当两个场论的希尔伯特空间和算子之间存在一个定义良好的映射时,就会发生这种情况。这种对应关系为计算Bethe Anesthesia可积模型的矩阵元提供了一种有效的方法,克服了直接确定矩阵元的技术困难。我们分析这种对应关系的最简单的例子中,它发生,即量子非线性薛定谔和Sinh-Gordon模型。

英文摘要:

We show that the matrix elements of integrable models computed by the Algebraic Bethe Ansatz can be put in direct correspondence with the Form Factors of integrable relativistic field theories. This happens when the S-matrix of a Bethe Ansatz model can be regarded as a suitable non-relativistic limit of the S-matrix of a field theory, and when there is a well-defined mapping between the Hilbert spaces and operators of the two theories. This correspondence provides an efficient method to compute matrix elements of Bethe Ansatz integrable models, overpassing the technical difficulties of their direct determination. We analyze this correspondence for the simplest example in which it occurs, i.e. the Quantum Non-Linear Schrodinger and the Sinh-Gordon models.

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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