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arXiv 2108.06190math-phmath.MP
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部分畴壁条件下有理六顶点模型的边界一点函数:显式公式和标度性质

Boundary one-point function of the rational six-vertex model with partial domain wall boundary conditions: explicit formulas and scaling properties

Mikhail D. Minin, Andrei G. Pronko

摘要:

我们考虑了具有部分畴壁边界条件的$s\times N$正方形格点$s\leq N$上带有理权的六顶点模型。本文研究了在自由边界条件下的边界上的单点函数。对于有限格点,它可以用量子逆散射方法计算。在大的$N$极限中,结果归结为权参数的显式终止级数。使用鞍点法的等效积分表示,我们表明,作为$s$下一个趋于无穷大,一点函数演示了一个逐步的行为,在附近的步骤,它的规模作为误差函数。我们还表明,一点函数的渐近展开可以从一个二阶常微分方程计算。

英文摘要:

We consider the six-vertex model with the rational weights on an $s\times N$ square lattice, $s\leq N$, with partial domain wall boundary conditions. We study the one-point function at the boundary where the free boundary conditions are imposed. For a finite lattice, it can be computed by the quantum inverse scattering method in terms of determinants. In the large $N$ limit, the result boils down to an explicit terminating series in the parameter of the weights. Using the saddle-point method for an equivalent integral representation, we show that as $s$ next tends to infinity, the one-point function demonstrates a step-wise behavior; at the vicinity of the step it scales as the error function. We also show that the asymptotic expansion of the one-point function can be computed from a second-order ordinary differential equation.

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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