Astronomy and Astrophysics – Astrophysics – General Relativity and Quantum Cosmology
Scientific paper
2010-03-06
Phys.Rev.D81:104006,2010
Astronomy and Astrophysics
Astrophysics
General Relativity and Quantum Cosmology
16 pages, 2 figures; journal version
Scientific paper
10.1103/PhysRevD.81.104006
We construct 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. This result demonstrates that the recently proven no-go theorem that forbids gravity theories of this type in N = 2 cannot be extended beyond the bimetric case. 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.
Hohmann Manuel
Wohlfarth Mattias N. R.
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