The boundary spin correlations for planar Ising models have a well-known Pfaffian structure. For Ising models on the square lattice with finite-range interactions, the corresponding graph is not planar and the Pfaffian structure no long holds. Nevertheless, at criticality, the Pfaffian structure of boundary correlations emerges asymptotically (when boundary points are taken far apart). The proven statement establishes an aspect of universality in two dimensions beyond the solvable cases. In this talk, I will present this result and discuss the main ideas of proof, that involve a percolation interpretation of the problem (via Aizenman random currents, and FK percolation) and recent progress in percolation theory (robust Russo-Seymour-Welsh theory). This talk is based on a joint work with Michael Aizenman, Hugo Duminil-Copin and Simone Warzel.
De Wendelin Werner
De Victor Dotsenko
De Alessandro Giuliani
De Rafael Greenblatt
De Eveliina Peltola
De Giuseppe Mussardo
De Yvan Velenik
De Michele Caselle
De Ara Sedrakyan
De Michael Aizenman
De Jürg Fröhlich , Tom Spencer , Arthur Jaffe , Geoffrey Grimmett , Joel Lebowitz
De Vincent Tassion
De Clément Delcamp
De Claudio Dappiaggi
De Alexander Strohmaier
De Hans Lindblad
De Olivier Benoist
De Viviane Pons
De Viviane Pons
