WebFeb 4, 2024 · In this new paper, three researchers proposed a radical new method: hunting gravitational waves by looking for effects of direct interactions between gravitons — … WebApr 10, 2024 · Now, a pair of physicists at the Helsinki Institute of Physics has proposed a new mechanism to generate lots of dark matter in the early universe, even if the inflaton …
Is the origin of dark matter gravity itself? Space
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Can Dark Matter be... (massive) gravitons? - Physics Stack …
WebThe dark energy from virtual gravitons is consistent with observational data on supernovas with the same accuracy as the ΛCDM model. The fact that virtual gravitons are capable of producing a de Sitter accelerated expansion of the FLRW universe was established in 2008 (see references). The combination of conformal non-invariance with … WebApr 22, 2016 · We consider the possibility that the massive graviton is a viable candidate of dark matter in the context of bimetric gravity. We first derive the energy-momentum tensor of the massive graviton and show that it indeed behaves as that of dark matter fluid. We then discuss a production mechanism and the present abundance of massive gravitons … WebJul 30, 2024 · We detailed our discovery of a chiral enhancement in the production cross sections of massive spin-2 gravitons, below the electroweak symmetry breaking scale, that makes them ideal dark matter candidates for the freeze-in mechanism. The result is independent of the physics at high scales, and points toward masses in the keV- MeV … is situationship bad