Kolomeisky Work Earns Editor's Suggestion
What do charge oscillations in conductors and expansion of the physical Universe have in common? More than meets the eye! This Editor's Suggestion, https://link.aps.org/doi/10.1103/PhysRevB.100.140301, shows that a collection of identical charged particles in the presence of a uniform compensating background charge can evolve as if they were part of an expanding or contracting homogeneous and isotropic Universe with the "wrong" sign of interaction: while gravity is attractive, the charges repel each other. Otherwise, the equations of motion are exactly the cosmological equations of the general theory of relativity.