%0 Journal Article
%T Ultra High Energy Cosmic Rays and Inflation Relics
%A Vadim A. Kuzmin
%A Igor I. Tkachev
%J Physics
%D 1999
%I arXiv
%R 10.1016/S0370-1573(99)00064-2
%X There are two processes of matter creation after inflation that may be relevant to the resolution of the puzzle of cosmic rays observed with energies beyond GZK cut-off: 1) gravitational creation of superheavy (quasi)stable particles, and 2) non-thermal phase transitions leading to formation of topological defects. We review both possibilities.
%U http://arxiv.org/abs/hep-ph/9903542v1