A Gauge-invariant Analysis of Magnetic Fields in General Relativistic Cosmology
arXiv:gr-qc/9704015 · doi:10.1088/0264-9381/14/9/011
Abstract
We provide a fully general-relativistic treatment of cosmological perturbations in a universe permeated by a large-scale primordial magnetic field, using the Ellis-Bruni gauge-invariant formalism. The exact non-linear equations for general relativistic magnetohydrodynamic evolution are derived. A number of applications are made: the behaviour of small perturbations to Friedmann universes are studied; a comparison is made with earlier Newtonian treatments of cosmological perturbations and some effects of inflationary expansion are examined.
31 pages, Latex, Submitted to Classical and Quantum Gravity