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GR: Fachverband Gravitation und Relativitätstheorie
GR 4: Klassische Allgemeine Relativitätstheorie 1
GR 4.5: Vortrag
Dienstag, 14. März 2017, 10:10–10:30, SFG 0140
Friedmann-like initial data for an inhomogeneous universe with black holes — •Michael Fennen1 and Domenico Giulini1,2 — 1ZARM, Universität Bremen — 2ITP, Universität Hannover
The very successful standard model of cosmology is based upon the cosmological principle stating that the Universe is homogeneous and isotropic. This is only true on the largest scales so that we are aiming for a model that takes the inhomogeneous structure on smaller scales into account. For this reason we consider the initial data of a closed vacuum space-time filled with black holes at the moment of maximal expansion. Since we do not expect that every configuration of black holes leads to a Friedmann-like time evolution, we present a new simple criterion for these black hole configurations such that the initial data is similar to a spherical Friedmann dust universe in some sense.