Gaussian free field convergence of the six-vertex model with $-1\le \hat{I}”\le -\frac{1}{2}$

Hugo Duminil-Copin, Karol Kajetan Kozlowski, Piet Lammers +1

We study the isotropic six-vertex model on ${\mathbb{Z}}^2$ with spectral parameter $\hat{I}”\in [-1,-1/2]$, that is, with weights $\mathbf{a}=\mathbf{b}=1$ and $\mathbf{c}\in [\sqrt{3},2]$.…