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arXiv 0902.3476math-phmath.MP
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U(1)不变可积模型的代数Bethe证明:紧和非紧应用

Algebraic Bethe ansatz for U(1) Invariant Integrable Models: Compact and non-Compact Applications

M. J. Martins, C. S. Melo

摘要:

我们将在前一篇论文\cite{CM}中发展的代数Bethe方法应用于三个不同的U(1)可积顶点模型族,它们具有任意的$N$键态.这些统计力学系统是基于量子群$U_q[SU(2)]$的更高自旋表示,对于$q$的通用和非通用值,以及基于$SL(2,{\cal R})$代数的非紧致离散表示。对于所有这些模型,我们都给出了与相应传递矩阵本征值问题相关的壳内和壳外性质的显式表达式。不平行于贝特状态的向量的幅度示出因式分解的基本积木功能。非紧$SL(2,{\cal R})$模型的结果被认为是来自那些通过采取适当的$N \to \infty$限制的紧凑系统。这使我们能够从有限自由度系统出发研究非紧$SL(2,{\cal R})$模型的性质。

英文摘要:

We apply the algebraic Bethe ansatz developed in our previous paper \cite{CM} to three different families of U(1) integrable vertex models with arbitrary $N$ bond states. These statistical mechanics systems are based on the higher spin representations of the quantum group $U_q[SU(2)]$ for both generic and non-generic values of $q$ as well as on the non-compact discrete representation of the $SL(2,{\cal R})$ algebra. We present for all these models the explicit expressions for both the on-shell and the off-shell properties associated to the respective transfer matrices eigenvalue problems. The amplitudes governing the vectors not parallel to the Bethe states are shown to factorize in terms of elementary building blocks functions. The results for the non-compact $SL(2,{\cal R})$ model are argued to be derived from those obtained for the compact systems by taking suitable $N \to \infty$ limits. This permits us to study the properties of the non-compact $SL(2,{\cal R})$ model starting from systems with finite degrees of freedom.

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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