2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/56500We define a scaling limit of the height function on the domino tiling model (dimer model) on simply-connected regions in Z^2 and show that it is the ``massless free field'', a Gaussian process with independent coefficients when expanded in the eigenbasis of the Laplacian.8 pages, 1 figureMathematical Physics82B20; 60G15text