%0 Journal Article %T Effective diffusion on the interface between two surfaces %A Carlos Valero Valdes %J Physics %D 2015 %I arXiv %X The purpose of this paper is to provide a formula for the effective diffusion operator \DD obtained by projecting the 3-dimensional diffusion equation onto a 2-dimensional plane, assuming reflective boundary conditions between two surfaces in 3-dimensional space. The formula provided corresponds to the case of finite transversal stabilization rate. %U http://arxiv.org/abs/1511.06166v1