Conjectured asymptotics for the correction integrals in the inverse Kasteleyn matrix

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Let n=4mn=4m, 0<a<10<a<1, and take x=(x1,x2)∈Wε1x=(x_1,x_2)\in\mathtt{W}_{\varepsilon_1} and y=(y1,y2)∈Bε2y=(y_1,y_2)\in\mathtt{B}_{\varepsilon_2} with ε1,ε2∈0,1\varepsilon_1,\varepsilon_2\in\\{0,1\\}. Let ζ(x,y)\zeta(x,y), Σ(x,y)\Sigma(x,y), the contours Cj,Ck′\mathcal{C}_j,\mathcal{C}'_k, the contour γ\gamma, the amplitudes Aε1,ε2j,kA^{j,k}_{\varepsilon_1,\varepsilon_2}, and the functions f−,f+f^-,f^+ be as defined in the source. Correction-integral asymptotics conjecture. For −1/2≤αx,αy<0-1/\sqrt{2}\leq\alpha_x,\alpha_y<0, Iε1,ε20,0\mathcal{I}^{0,0}_{\varepsilon_1,\varepsilon_2} is given by the stated double-contour integral with error O(m−1)O(m^{-1}); when αx<−1/2\alpha_x<-1/\sqrt{2} or αy<−1/2\alpha_y<-1/\sqrt{2}, it is given by the corresponding double-contour integral minus the 2π2\pi contour integral over γ\gamma, again with error O(m−1)O(m^{-1}). For (j,k)≠(0,0)(j,k)\ne(0,0) and any α<0\alpha<0, Iε1,ε2j,k\mathcal{I}^{j,k}_{\varepsilon_1,\varepsilon_2} is given by the stated double-contour integral with phase gj,kg_{j,k} and error O(m−1)O(m^{-1}), where the four phases gj,kg_{j,k} are the displayed combinations of −2i(w−z)-2i(w-z), αxf±(w)\alpha_x f^\pm(w), and αyf±(z)\alpha_y f^\pm(z). These asymptotics are intended to provide the correction terms needed for the inverse Kasteleyn matrix and are presented without rigorous error bounds in the paper.

References

Primary source

Emily Bain, “A numerical study of two-point correlation functions of the two-periodic weighted Aztec diamond in mesoscopic limit”, arXiv:2304.09393 (2023).

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