Journal of Physics A Mathematical and General
Dimensional reduction and correlation functions on 3D lattice models
Antoine Georges, David Hansel, Pierre Le Doussal, J.-M. Maillard
Abstract
The exact calculation of an infinite number of correlation functions for general cubic and HCP anisotropic Ising models on their 'disorder variety' is described. The intra-plane correlation functions are found to be exactly the same as for a two-dimensional free-fermion Ising model. This allows the authors to characterise the intersection between the disorder and critical variety which displays in general anisotropic scaling with non-trivial exponents.