A pr 2 00 9 Gravitational backreaction in cosmological spacetimes

@inproceedings{Anastopoulos2009AP2,
  title={A pr 2 00 9 Gravitational backreaction in cosmological spacetimes},
  author={C. Anastopoulos},
  year={2009}
}
We develop a new formalism for the treatment of gravitationa l backreaction in the cosmological setting. The approach is inspired by projective tec hniques in non-equilibrium statistical mechanics. We employ group-averaging with respect to the ac tion of the isotropy group of homogeneous and isotropic spacetimes (rather than spatial aver aging), in order to… CONTINUE READING