Long Range Magnetic Interaction between Josephson Junctions

Abstract
A new model for magnetic coupling between long Josephson junctions is proposed. The coupling mechanism is a result of the magnetic fields outside the junctions and is consequently effective over long distances between junctions. We give specific expressions for the form and magnitude of the interaction, and we study a few dynamical examples of experimental relevance. It is found that this new coupling manifests itself much like Volkov's coupling through thin superconductors.