Non-linear electrodynamics and the acceleration of the universe
arXiv:astro-ph/0312093 · doi:10.1103/PhysRevD.69.127301
Abstract
It is shown that the addition of a non-linear term to the Lagrangian of the electromagnetic field yields a fluid with an asymptotically super-negative equation of state, causing an accelerated expansion of the universe. Some general properties of nonlinear electromagnetism in cosmology are also discussed.
5 pages, 1 figure, minor modifications to match version to appear in PRD