Can the Acceleration of Our Universe Be Explained by the Effects of Inhomogeneities ?

@inproceedings{Ishibashi2005CanTA,
  title={Can the Acceleration of Our Universe Be Explained by the Effects of Inhomogeneities ?},
  author={Akihiro Ishibashi and Robert M. Wald},
  year={2005}
}
No. It is simply not plausible that cosmic acceleration could arise within the context of general relativity from a back-reaction effect of inhomogeneities in our universe, without the presence of a cosmological constant or “dark energy.” We point out that our universe appears to be described very accurately on all scales by a Newtonianly perturbed FLRW metric. (This assertion is entirely consistent with the fact that we commonly encounter δρ/ρ > 1030.) If the universe is accurately described… CONTINUE READING
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