Karlsruhe 2011 – scientific programme

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GR: Fachverband Gravitation und Relativitätstheorie

GR 15: Alternative Ansätze

GR 15.1: Talk

Friday, April 1, 2011, 09:10–09:30, 20.40: 101

Repulsive gravity model for dark energy — •Manuel Hohmann — II. Institut für theoretische Physik, Universität Hamburg

We present a multimetric gravity theory containing N ≥ 3 copies of standard model matter and a corresponding number of metrics. In the Newtonian limit, this theory generates attractive gravitational forces within each matter sector, and repulsive forces of the same strength between matter from different sectors. We apply our theory to cosmology and show that the repulsion between different types of matter may induce the observed accelerating expansion of the universe. In this way dark energy can be explained simply by dark copies of the well-understood standard model. We finally show that our result is consistent with solar system experiments at the post-Newtonian level.