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arXiv math-ph/0702012math-phhep-thmath.MP
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具有畴壁边界条件的三角Felderhof模型

On the trigonometric Felderhof model with domain wall boundary conditions

A Caradoc, O Foda, M Wheeler, M Zuparic

摘要:

我们考虑三角Felderhof模型,在外场中的自由费米子,在一个有限的格子畴壁边界条件。顶点权是快速度和外场的函数。我们得到了一个行列式表达式的配分函数的特殊情况下,其中的依赖性的rapidities被消除,但一般的外场变量。这个行列式可以用乘积形式来计算.在齐次极限下,它与2-Toda tau函数成比例。接下来,我们使用代数Bethe无因次分解基来获得在依赖于所有变量的一般情况下的配分函数的乘积表达式。

英文摘要:

We consider the trigonometric Felderhof model, of free fermions in an external field, on a finite lattice with domain wall boundary conditions. The vertex weights are functions of rapidities and external fields. We obtain a determinant expression for the partition function in the special case where the dependence on the rapidities is eliminated, but for general external field variables. This determinant can be evaluated in product form. In the homogeneous limit, it is proportional to a 2-Toda tau function. Next, we use the algebraic Bethe ansatz factorized basis to obtain a product expression for the partition function in the general case with dependence on all variables.

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