Massive graviton as a testable cold dark matter candidate

Details Massive graviton as a testable cold dark matter candidate Massive graviton as a testable cold dark matter candidate

2004-11-17

arxiv.org/abs/hep-th/0411158v2

Phys.Rev.Lett. 94 (2005) 181102

Physics

High Energy Physics

High Energy Physics - Theory

4 pages, final version to appear in PRL

Scientific paper

10.1103/PhysRevLett.94.181102

We construct a consistent model of gravity where the tensor graviton mode is massive, while linearized equations for scalar and vector metric perturbations are not modified. The Friedmann equation acquires an extra dark-energy component leading to accelerated expansion. The mass of the graviton can be as large as $\sim (10^{15}{cm})^{-1}$, being constrained by the pulsar timing measurements. We argue that non-relativistic gravitational waves can comprise the cold dark matter and may be detected by the future gravitational wave searches.

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