Random Ising model in three dimensions: theory, experiment and   simulation - a difficult coexistence
  We discuss different approaches for studying the influence of disorder in the three-dimensional Ising model. From the theoretical point of view, renormalisation group calculations provide quite accurate results. Experiments carried out on crystalline mixtures of compounds lead to measurements as accurate as three digits on the values of critical exponents. Numerically, extensive Monte Carlo simulations then pretend to be of comparable accuracy. Life becomes complicated when details are compared between the three approaches. 
Bertrand Berche (LPM), Pierre-Emmanuel Berche (GPM), Christophe   Chatelain (LPM), Wolfhard Janke (ITP LEIPZIG)