Modified Newtonian Dynamics as a Prediction of General Relativity

We treat the physical vacuum as a featureless relativistic continuum in motion, and explore its consequences. Proceeding in a step-by-step manner, we are able to show that the equations of classical electrodynamics follow from the motion of a space-filling fluid of neutral spinors which we identify with neutrinos. The model predicts that antimatter has negative mass, and that neutrinos are matterantimatter dipoles. Together these suffice to explain the presence of modified Newtonian dynamics as a gravitational polarisation effect. The existence of antigravity could resolve other major outstanding issues in cosmology, including the rate of expansion of the universe and its flatness, the origin of gamma ray bursts, and the smallness of the cosmological constant. If our model is correct then all of these observations are non-trivial predictions of Einstein’s general theory of relativity.