Cosmic coincidence or graviton mass?
Using the quantum corrected Friedmann equation, obtained from the quantum Raychudhuri equation, and assuming a small mass of the graviton (but consistent with observations and theory), we propose a resolution of the smallness prroblem (why is observed vacuum energy so small?) and the coincidence problem (why does it constitute most of the universe, about 70%, in the current epoch?).
Sherpa Romeo yellow journal. Preprint of an article published in International Journal of Modern Physics D © World Scientific Publishing Company https://www.worldscientific.com/worldscinet/ijmpd
Friedmann equation , Raychudhuri equation , Gravitons , Quantum corrected , Smallness problem , Coincidence problem
Das, S. (2014). Cosmic coincidence or graviton mass? International Journal of Modern Physics D., 23(12), 1442017. https://doi.org/10.1142/S0218271814420176