Massive Graviton as a Testable Cold-Dark-Matter Candidate
2005; American Physical Society; Volume: 94; Issue: 18 Linguagem: Inglês
10.1103/physrevlett.94.181102
ISSN1092-0145
AutoresSergei Dubovsky, P. Tinyakov, I. Tkachev,
Tópico(s)Black Holes and Theoretical Physics
ResumoWe 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 approximately (10(15) cm)(-1), being constrained by the pulsar timing measurements. We argue that nonrelativistic gravitational waves can comprise the cold dark matter and may be detected by the future gravitational wave searches.
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