Highest-Energy Cosmic Rays and Hilbertian Repulsive Effect
arXiv:0711.4997
Abstract
We point out that an important portion of the high energy of the cosmic rays from extragalactic sources can be attributed to a Hilbertian repulsive effect, which is a consequence of Einstein equations without cosmological term.
5 pages, 4 figures, LaTeX, corrected typo at page 2