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SÉMINAIRE DU GRECO
"Dark energy from cosmic structure" |
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D. Wiltshire |
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I will give an overview of the timescape cosmology. It is assumed that inhomogeneities - voids, walls and filaments - modify the average background geometry of the universe, which is no longer a simple solution of Einstein's equations with homogeneous dust. The Buchert statistical formalism with backreaction in general relativity is reinterpreted by revisiting fundamental principles relating to the definition of gravitational
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mardi 7 avril 2015 - 11:00 Salle des séminaires Évry Schatzman, Institut d'Astrophysique de Paris |
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