Gravitational energy as dark energy: Towards concordance cosmology without Lambda (2009)
Type of ContentConference Contributions - Published
PublisherUniversity of Canterbury. Physics and Astronomy
AuthorsWiltshire, D.L.show all
I briefly outline a new physical interpretation to the average cosmological parameters for an inhomogeneous universe with backreaction. The variance in local geometry and gravitational energy between ideal isotropic observers in bound structures and isotropic observers at the volume average location in voids plays a crucial role. Fits of a model universe to observational data suggest the possibility of a new concordance cosmology, in which dark energy is revealed as a mis-identification of gravitational energy gradients that become important when voids grow at late epochs.
CitationWiltshire, D.L. (2009) Gravitational energy as dark energy: Towards concordance cosmology without Lambda. Lyon, France: Dark Energy and Dark Matter: Observations, Experiments and Theories, 7-11 Jul 2008. EAS Publication Series, 36, 91-98.
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