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

Abstract

We consider the six-vertex model with the rational weights on an $s\times N$ square lattice, $s\le N$, 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.

arXiv comment29 pages, 5 figures

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Cited by in corpus (2)

• Construction of determinants for the six-vertex model with domain wall boundary conditions
• Modified rational six vertex model on a rectangular lattice : new formula, homogeneous and thermodynamic limits