A covariant and gauge invariant formulation of the cosmological "backreaction"
arXiv:0912.3244 · doi:10.1088/1475-7516/2010/02/009
Abstract
Using our recent proposal for defining gauge invariant averages we give a general-covariant formulation of the so-called cosmological "backreaction". Our effective covariant equations allow us to describe in explicitly gauge invariant form the way classical or quantum inhomogeneities affect the average evolution of our Universe.
12 pages, no figures. Typos corrected, matches version to appear in JCAP