Nonlinear electrodynamics and FRW cosmology
arXiv:gr-qc/9806076
Abstract
Maxwell electrodynamics, considered as a source of the classical Einstein field equations, leads to the singular isotropic Friedmann solutions. We show that this singular behavior does not occur for a class of nonlinear generalizations of the electromagnetic theory. A mathematical toy model is proposed for which the analytical nonsingular extension of FRW solutions is obtained.
5 pages, 3 eps figures, REVTeX 3 with epsf and multicol sty files, new solutions, improved version with emphasis in math content Journal-refby: Phys. Rev. D 65, 063501 (2002)