Turing-like patterns in an asymmetric dynamic Ising model

Abstract

To investigate novel aspects of pattern formation in spin systems, we use a mapping between reactive concentrations in a reaction-diffusion system and spin orientations in a dynamic multiple-spin Ising model. While pattern formation in Ising models always rely on infinite-range interactions, this mapping allows us to design an finite-range interactions Ising model that can produce patterns observed in reaction diffusion systems including Turing patterns with a tunable typical length scale. This model has asymmetric interactions and several spin types coexisting at a site. While we use the example of genetic regulation during embryo-genesis to build our model, it can be used to study the behavior of other complex systems of interacting agents.

9pages, including 3 pages of appendices, 5 + 2 figures