| Abstract: | Placing two objects in mediums with with long range correlations generically lead to long-range interactions between the bodies. Examples include the Casimir force between two uncharged parallel plates, and thermal (Critical) Casimir-like forces. Nonequilibrium systems are a natural candidate for such forces, since they are known to generically exhibit long range correlations in the presence of a conserved field. In this talk we will examine a general scheme for calculating FIFs between two parallel plates in driven diffusive media. This scheme will be applied to several dynamics defined on a lattice to find a force that decays as 1/d with d the separation between the plates. We will see that the magnitude and direction of the force can be controlled using external parameters such as drive field and temperature |