posted on Feb, 6 2013 @ 05:28 PM
So the article was in general quite typically a theory paper and so pretty difficult to understand in comparison to an experimental physics paper.
Regardless, they come to the conclusion that the GZK cut-off tells us that the universe is a simulation.
But what is interesting is that they start with the assumption and fit it to the data, then say yes look it works. It is kind of different to taking
some lower order things and then predicting the GZK cut-off
The GZK cut off itself is not an unknown, it is predicted that when a proton is accelerated up to about 1x(19-20) eV the protons can interact with the
CMB, reducing in energy by forming an excited state delta which decays to produce a high energy proton and a pion.
All it suggests is that sources of such high energy cosmic rays can not exist locally if our understanding of interaction cross sections is correct.
(it might not be) There are also some interesting things that make such calculations difficult to do if we consider that not all primary cosmic rays
are protons, but also heavier ions too... allowing the GZK cut off to be somewhat softer than a direct slice.
Eitherway, interesting paper but i dont think it really gives any evidence so to speak