Optical properties of cermets: 3D real space renormalization using the connection machine

We propose a 3D position space renormalization approach based on Kadanoff's block method, for the calculation of the effective dielectric function of cermet type film. This model has been applied to simulated cubic lattices with particle aggregation. Our calculations were performed on a Thinking Machine CM5 massively parallel supercomputer. The renormalization process maps very naturally on to hypercube parallel architecture. We obtain good agreement with most of the experimental data.