May 14 2011
Official Website for Massimo Villata
Villata poses a new theory which assumes that both matter and antimatter have positive mass and energy density, which gets particles attracting particles and antiparticles attracting antiparticles through the force of gravity. This new theory will in essence remove dark energy from the cosmic expansion equation. Villata shows that the theory of general relativity predicts that the gravitational interaction between matter and antimatter is mutually repulsive (anti-gravity), and can potentially explain the observed accelerated expansion of the Universe without the need for dark energy.
See also http://adsabs.harvard.edu/abs/2015AnP…527..507V