Randomly dilute Ising model: A nonperturbative approach
arXiv:cond-mat/0109176 · doi:10.1103/PhysRevB.65.140402
Abstract
The N-vector cubic model relevant, among others, to the physics of the randomly dilute Ising model is analyzed in arbitrary dimension by means of an exact renormalization-group equation. This study provides a unified picture of its critical physics between two and four dimensions. We give the critical exponents for the three-dimensional randomly dilute Ising model which are in good agreement with experimental and numerical data. The relevance of the cubic anisotropy in the O(N) model is also treated.
4 pages, published version