2003/12/31 by M. Novello, S. E. Perez Bergliaffa, J. Salim · 1 citation
Physics and Astronomy · #astro-ph #gr-qc #hep-th
paper · pdf · doi:10.1103/physrevd.69.127301
published as Phys.Rev. D69 (2004) 127301 · 5 pages, 1 figure, minor modifications to match version to appear in PRD
arxiv created 2004/04/08 · arxiv updated 2009/12/01
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.