Dark Matter from R²-gravity

2008/09/10 by Jose A. R. Cembranos · 1 citation
Physics and Astronomy · #hep-ph #astro-ph #gr-qc

paper · pdf · doi:10.1103/physrevlett.102.141301

published as Phys.Rev.Lett.102:141301,2009 · 5 pages, 2 figures

arxiv created 2008/09/10 · arxiv updated 2009/12/01

Abstract

The modification of Einstein gravity at high energies is mandatory from a quantum approach. In this work, we point out that this modification will necessarily introduce new degrees of freedom. We analyze the possibility that these new gravitational states can provide the main contribution to the non-baryonic dark matter of the Universe. Unfortunately, the right ultraviolet completion of gravity is still unresolved. For this reason, we will illustrate this idea with the simplest high energy modification of the Einstein-Hilbert action: R²-gravity.

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